Commit Graph

36051 Commits

Author SHA1 Message Date
Joe Hoyle 0a787caec6 REST API: Allow unsetting a post’s password.
Props danielbachhuber, iseulde.
Fixes #38919.
Built from https://develop.svn.wordpress.org/trunk@39352


git-svn-id: http://core.svn.wordpress.org/trunk@39292 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-11-23 23:13:32 +00:00
Drew Jaynes a7ddf24f3d Docs: Add a missing changelog entry for the point where the `$tagnames` parameter was added to `get_shortcode_regex()`.
Props keesiemeijer.
Fixes #38914.

Built from https://develop.svn.wordpress.org/trunk@39351


git-svn-id: http://core.svn.wordpress.org/trunk@39291 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-11-23 17:35:32 +00:00
Weston Ruter 456941a018 Customize: Refactor logic for updating `custom_css` posts by introducing `wp_update_custom_css_post()` function and renaming update filter.
* Moves logic from `WP_Customize_Custom_CSS_Setting::update()` into a re-usable `wp_update_custom_css_post()` function, useful for future REST API endpoint, WP-CLI command, or plugin migrations.
* Renames `customize_update_custom_css_post_content_args` filter to `update_custom_css_data` and improves the naming of the parameters. Instead of passing `post_content` and `post_content_filtered` the filtered array now contains `css` and `preprocessed` respectively. 
* The second context param for the `update_custom_css_data` filter is now an array of the original args passed to `wp_update_custom_css_post()` and there is now no more `$setting` arg since it isn't necessarily being called in the customizer context.

Props westonruter, georgestephanis.
See #35395.
Fixes #38672.

Built from https://develop.svn.wordpress.org/trunk@39350


git-svn-id: http://core.svn.wordpress.org/trunk@39290 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-11-23 17:34:31 +00:00
Joe Hoyle 6f189ddbc8 REST API: Add support for comments of password-protected posts.
Core requires the post password to view and create comments on password protected posts, so we must support a “password” param on the comments endpoint when fetch comments for a specific post and creating a comment on a password protected post.

Props flixos90, jnylen0.
Fixes #38692.
Built from https://develop.svn.wordpress.org/trunk@39349


git-svn-id: http://core.svn.wordpress.org/trunk@39289 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-11-23 16:15:31 +00:00
Rachel Baker a985a4d126 REST API: Always fire the `rest_insert_*` actions after the related object is updated or inserted.
Brings consistency to the `rest_insert_*` actions. Also includes some shuffling and clean-up as well including:
- Ensure we are passing the most current `$post` and `$user` objects to the `update_additional_fields_for_object()` callbacks.
- Changes the function signature of `handle_status_param()` in the Comments controller to accept just the comment_id as the 2nd parameter, instead of a full WP_Comment object. Only the comment_id is needed in the method, this avoids having to include another `get_comment()` call. 
- Renames a variable in the `create_item()` method of the Posts controller from `$post` -> `$prepared_post` to be more explicit.
- Minor fixes/clarifications to the rest_insert_* hook docs

Props rachelbaker, joehoyle
Fixes #38905.
Built from https://develop.svn.wordpress.org/trunk@39348


git-svn-id: http://core.svn.wordpress.org/trunk@39288 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-11-23 15:33:31 +00:00
Pascal Birchler 98e8bf7ba2 Embeds: Correctly remove security attribute from iframes in IE 10 and IE 11.
This was originally added in 4.4, but presumably broke with [35708], which prevented these browsers from actually reaching the relevant code section.
Let's make embeds work again in IE 10 and IE 11.

Fixes #38694.
Built from https://develop.svn.wordpress.org/trunk@39347


git-svn-id: http://core.svn.wordpress.org/trunk@39287 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-11-23 13:38:33 +00:00
Helen Hou-Sandí 70fc99e323 Theme starter content: Add support for featured images and page templates.
Featured image support means that attachments can now be imported. Media can be sideloaded from within theme or plugin directories. Like other posts, attachments are auto-drafts until customizer changes are published, and are not duplicated when they already exist in the customized state. Attachment IDs can be used for any number of purposes, much like post IDs. Twenty Seventeen now includes 3 images used as featured images to best showcase the multi-section homepage setup.

As featured image IDs are stored in post meta, it also made sense to add support for page templates. Twenty Seventeen does not include any such templates, but the functionality can be quite important for displaying themes to their best effect.

props westonruter, helen, flixos90.
fixes #38615.

Built from https://develop.svn.wordpress.org/trunk@39346


git-svn-id: http://core.svn.wordpress.org/trunk@39286 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-11-23 09:53:33 +00:00
Weston Ruter 6b5d960453 Customize: Clean up docs and code style for customize changes in 4.7.
* Adds missing `resolve`/`fail` for promise returned by `loadThemePreview`.
* Adds missing jsdoc blocks and tags.
* Adds missing phpdoc and makes corrections.

See #37770.
Fixes #38908.

Built from https://develop.svn.wordpress.org/trunk@39345


git-svn-id: http://core.svn.wordpress.org/trunk@39285 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-11-23 06:05:32 +00:00
Joe Hoyle e20ded7e75 REST API: Make JS Client store schema in session storage.
Props adamsilverstein.
Fixes #38895.
Built from https://develop.svn.wordpress.org/trunk@39344


git-svn-id: http://core.svn.wordpress.org/trunk@39284 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-11-23 02:55:30 +00:00
Joe Hoyle 14654d9539 REST API: Allow unsetting of page templates in update requests.
Sending a request to update a page with the template property set to an empty string resulted in an error because “” was not a valid value in the enum.

Props lucasstark, swissspidy.
Fixes #38877.
Built from https://develop.svn.wordpress.org/trunk@39343


git-svn-id: http://core.svn.wordpress.org/trunk@39283 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-11-23 02:47:30 +00:00
Joe Hoyle d711f2c18d REST API: Update “resource” strings to use the appropriate nouns.
Props ramiy.
Fixes #38811.
Built from https://develop.svn.wordpress.org/trunk@39342


git-svn-id: http://core.svn.wordpress.org/trunk@39282 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-11-23 02:42:30 +00:00
David A. Kennedy 68f5457770 Twenty Seventeen: Ensure edit button label displays properly in other languages
This bug occurred in any language where text wraps character-by-character, since those languages don't delimit words with spaces. In Japanese, Chinese and Korean, etc., it was possible for the label to be displayed vertically.

Props tg29359, afercia, odysseygate.

Fixes #38876.

Built from https://develop.svn.wordpress.org/trunk@39341


git-svn-id: http://core.svn.wordpress.org/trunk@39281 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-11-23 00:44:30 +00:00
Joe McGill 46b2ef90be Twenty Seventeen: CSS coding standards fixes.
This makes a few adjustments to CSS to bring them inline with WordPress
CSS coding standards including:

* Font weights should be defined using numeric values
* Do not pad parentheses with spaces

This also fixes a couple of typos to inline comments.

Props netweb for initial patch.
Fixes #38901.
Built from https://develop.svn.wordpress.org/trunk@39340


git-svn-id: http://core.svn.wordpress.org/trunk@39280 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-11-22 20:47:33 +00:00
Helen Hou-Sandí 96960d8ed6 Twenty Seventeen: Ensure galleries display correctly in IE11.
It appears IE11 needs an explicit width for an `inline-block` parent element.

props derrickkoo, afercia.
fixes #38872.

Built from https://develop.svn.wordpress.org/trunk@39339


git-svn-id: http://core.svn.wordpress.org/trunk@39279 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-11-22 15:51:36 +00:00
Peter Wilson 0b8740d868 Themes: Prevent unneeded database updates in `wp_get_custom_css_post()`.
When a custom header image was set but custom CSS was not, `wp_get_custom_css_post()` was generating an UPDATE query on every frontend request.

In theme options the header image meta data is stored as an object. In `update_option()` this hits an edge case as the resource IDs of the old and new values never match.

This changes the logic of `wp_get_custom_css_post()` to ensure `set_theme_mod()` is only called when the custom CSS has changed.

Props bradyvercher, helen.
Fixes #38866.

Built from https://develop.svn.wordpress.org/trunk@39338


git-svn-id: http://core.svn.wordpress.org/trunk@39278 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-11-22 11:41:34 +00:00
Rachel Baker d87fe366a9 REST API: Set the comment `type` to a readonly property in the schema.
Document the type property as `readonly` and remove the default value. After #38820 it is no longer possible to set the type property on a comment to anything a custom type.

Props jnylen0, rachelbaker.
Fixes #38886.
Built from https://develop.svn.wordpress.org/trunk@39337


git-svn-id: http://core.svn.wordpress.org/trunk@39277 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-11-21 22:56:30 +00:00
Helen Hou-Sandí 2406fe498c Plugin install: De-duplicate a conditional, introduced in [38172].
props ChrisWiegman.
fixes #38190.

Built from https://develop.svn.wordpress.org/trunk@39336


git-svn-id: http://core.svn.wordpress.org/trunk@39276 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-11-21 21:33:30 +00:00
Joe Hoyle 014bb86248 REST API: Update description strings to match already existing ones in the admin.
Props dimadin.
Fixes #38807.
Built from https://develop.svn.wordpress.org/trunk@39335


git-svn-id: http://core.svn.wordpress.org/trunk@39275 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-11-21 20:41:30 +00:00
Andrew Ozz 9925a4ebb5 TinyMCE: avoid calling `editor.focus()` on loading the content in the editor. It may trigger scroll-into-view in the browser. Call the quirks fix in TinyMCE directly.
Props gitlost.
Fixes #38511.
Built from https://develop.svn.wordpress.org/trunk@39334


git-svn-id: http://core.svn.wordpress.org/trunk@39274 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-11-21 20:15:31 +00:00
Weston Ruter 277d4d0ab0 Customize: Prevent selective refresh from causing infinite fallback refreshes when nav menu contains invalid items.
Invalid nav menu items are exported as settings in the customize controls since it `is_admin()`, but any such `nav_menu_item` settings are excluded from the preview since it's the frontend. Selective refresh for nav menus needs to ignore the syncing of any such `nav_menu_item` settings that are `_invalid` since they are never rendered, and when a nav menu only contains invalid items, an infinite fallback refresh can ensue.

Fixes #38890.

Built from https://develop.svn.wordpress.org/trunk@39333


git-svn-id: http://core.svn.wordpress.org/trunk@39273 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-11-21 19:16:32 +00:00
Weston Ruter 3284f9a989 Customize: Remove iframe-specific behaviors from customize preview when previewing on frontend and not contained inside iframe.
* Strip out `customize_messenger_channel` from preview window URL when not contained in iframe.
* Allow interacting with unpreviewable links and forms when previewing customized state on frontend.

See #30937.
Fixes #38867.

Built from https://develop.svn.wordpress.org/trunk@39332


git-svn-id: http://core.svn.wordpress.org/trunk@39272 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-11-21 16:56:30 +00:00
Dominik Schilling 2328e7b17a I18N: In `wp_dropdown_languages()` rename the new `show_site_locale_default` argument to `show_option_site_default`.
This makes it consistent with arguments of other `wp_dropdown_*()` functions.

Props SergeyBiryukov.
See #38632.
Fixes #38871.
Built from https://develop.svn.wordpress.org/trunk@39331


git-svn-id: http://core.svn.wordpress.org/trunk@39271 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-11-21 16:14:30 +00:00
Dominik Schilling f5b6731777 I18N: Add an additional caching layer for `_load_textdomain_just_in_time()`.
Previously, if no translation files exist for a text domain, `_load_textdomain_just_in_time()` went through the entire process each time it was called. This results in an increased call to `get_locale()` and its `locale` filter.
This change splits the logic into `_get_path_to_translation()` and `_get_path_to_translation_from_lang_dir()`. The former, which is used by `_load_textdomain_just_in_time()`, caches the result of the latter. It also removes some non-working code from `WP_Locale_Switcher::load_translations()`.

Props jrf, swissspidy, sharkomatic, ocean90.
Fixes #37997.
Built from https://develop.svn.wordpress.org/trunk@39330


git-svn-id: http://core.svn.wordpress.org/trunk@39270 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-11-21 16:07:33 +00:00
Ryan McCue 863505cf81 REST API: Trim trailing slashes from routes.
WordPress' rewrites do this usually, but the behaviour was inconsistent when using non-pretty permalinks.

Props joehoyle.
Fixes #38873.

Built from https://develop.svn.wordpress.org/trunk@39329


git-svn-id: http://core.svn.wordpress.org/trunk@39269 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-11-21 05:46:30 +00:00
Ryan McCue ca9f71e9b2 REST API: Correctly map meta keys to field names.
This accidentally assumed $name was the same as $meta_key, which ruined the whole point of $name.

Props tharsheblows, joehoyle.
Fixes #38786.

Built from https://develop.svn.wordpress.org/trunk@39328


git-svn-id: http://core.svn.wordpress.org/trunk@39268 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-11-21 05:41:30 +00:00
Ryan McCue 4e05ff6a11 REST API: Disable anonymous commenting by default.
Adding a brand new anonymous comment method is a potential conduit for spam. Since it's still useful functionality, we're now hiding it behind a filter to allow plugins and themes to turn it on if they do want it.

Props helen, rachelbaker, joehoyle.
Fixes #38855.

Built from https://develop.svn.wordpress.org/trunk@39327


git-svn-id: http://core.svn.wordpress.org/trunk@39267 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-11-21 05:32:33 +00:00
John Blackbourn c2d709e9d6 I18n: Introduce more translator comments for strings that contain placeholders but don't have an accompanying translator comment.
See #38882

Built from https://develop.svn.wordpress.org/trunk@39326


git-svn-id: http://core.svn.wordpress.org/trunk@39266 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-11-21 02:46:30 +00:00
Sergey Biryukov 1b2ed70f39 I18N: Move the support forums URL in update-related HTTP API error messages to a separate translatable string that is already used elsewhere.
Props ramiy, SergeyBiryukov.
Fixes #38880.
Built from https://develop.svn.wordpress.org/trunk@39325


git-svn-id: http://core.svn.wordpress.org/trunk@39265 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-11-21 01:52:32 +00:00
John Blackbourn 40af377f57 Remove an erroneous `@TODO` introduced in [39323].
See #38882

Built from https://develop.svn.wordpress.org/trunk@39324


git-svn-id: http://core.svn.wordpress.org/trunk@39264 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-11-21 01:26:30 +00:00
John Blackbourn 4cf5550d8d I18n: Begin introducing translator comments for strings which include placeholders but no accompanying translator comment.
Adds context to one string used in two different contexts for the new user and new site signup email notification.

More to come.

See #38882

Built from https://develop.svn.wordpress.org/trunk@39323


git-svn-id: http://core.svn.wordpress.org/trunk@39263 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-11-21 01:22:32 +00:00
Joe Hoyle 5b97952cab REST API: Merge two error messages for edit / update.
Props ramiy.
Fixes #38879.
Built from https://develop.svn.wordpress.org/trunk@39322


git-svn-id: http://core.svn.wordpress.org/trunk@39262 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-11-20 22:36:31 +00:00
Sergey Biryukov 9b23ccfc29 REST API: Update error messages in `WP_REST_Comments_Controller` to use the common text for permission errors.
Props ramiy.
Fixes #38875.
Built from https://develop.svn.wordpress.org/trunk@39321


git-svn-id: http://core.svn.wordpress.org/trunk@39261 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-11-20 11:46:34 +00:00
Weston Ruter 3c7e23297e Customize: Ensure that `WP_Customize_Manager::save_changeset_post()` returns `setting_validities` even for supplied values that are unchanged from values in changeset.
Check setting existence and authorization via `WP_Customize_Manager::validate_setting_values()` even for `null` values to account for custom params being added to settings, preventing failures from being silently ignored.

See #38705, #30937.
Fixes #38865.

Built from https://develop.svn.wordpress.org/trunk@39320


git-svn-id: http://core.svn.wordpress.org/trunk@39260 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-11-19 22:39:33 +00:00
Gary Pendergast c04452a81f Emoji: Update Twemoji fallback to version 2.2.2.
This removes support for the skin tone modifier on emoji involving two or more people. This functionality is opposed by Apple and Google, so there is unlikely to be an input mechanism for such emoji, they oppose it on the grounds that they "...do not think a mechanism should be supported that only permits depiction of multi-person groups (or elements) in which each person has the same skin tone."

See their official notification for further details: http://www.unicode.org/L2/L2016/16332-remove-multi-emb.pdf

This change does not require a CDN update, as no emoji were altered or added, only removed.

See #38113.


Built from https://develop.svn.wordpress.org/trunk@39319


git-svn-id: http://core.svn.wordpress.org/trunk@39259 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-11-19 11:05:32 +00:00
Weston Ruter 224ee52ea7 Customize: Ensure `WP_Customize_Setting::value()` returns previewed value for custom types utilizing the `customize_value_{$id_base}` filter.
Fixes #38864.

Built from https://develop.svn.wordpress.org/trunk@39318


git-svn-id: http://core.svn.wordpress.org/trunk@39258 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-11-19 06:00:34 +00:00
Helen Hou-Sandí 7ba9399fbd Twenty Seventeen: Avoid an undefined index notice after [39291].
props westonruter.
see #38847.

Built from https://develop.svn.wordpress.org/trunk@39317


git-svn-id: http://core.svn.wordpress.org/trunk@39257 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-11-19 04:55:35 +00:00
Sergey Biryukov 1c110b8474 I18N: Use 'WordPress hook name' instead of 'PHP hook name' in translator comments added in [39315].
See #38862.
Built from https://develop.svn.wordpress.org/trunk@39316


git-svn-id: http://core.svn.wordpress.org/trunk@39256 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-11-19 02:44:30 +00:00
Sergey Biryukov 725a04d815 I18N: Add translator comments for strings in `_deprecated_*()` functions.
See #38862.
Built from https://develop.svn.wordpress.org/trunk@39315


git-svn-id: http://core.svn.wordpress.org/trunk@39255 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-11-19 02:39:33 +00:00
Sergey Biryukov 285a774cad I18N: Remove unnecessary `__()` calls in `_rotate_image_resource()` and `_flip_image_resource()`.
Use `_deprecated_function()`'s native strings.

Props ramiy.
Fixes #38862.
Built from https://develop.svn.wordpress.org/trunk@39314


git-svn-id: http://core.svn.wordpress.org/trunk@39254 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-11-19 02:30:31 +00:00
Sergey Biryukov 4811484433 REST API: Merge some more permission error strings missed in [39309].
See #38857.
Built from https://develop.svn.wordpress.org/trunk@39313


git-svn-id: http://core.svn.wordpress.org/trunk@39253 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-11-19 02:21:31 +00:00
Sergey Biryukov dca7d8d0ea Text Changes: Merge strings referring to `list_users` capability.
See #38857.
Built from https://develop.svn.wordpress.org/trunk@39312


git-svn-id: http://core.svn.wordpress.org/trunk@39252 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-11-19 02:16:30 +00:00
Sergey Biryukov 518fc0a05b I18N: Merge two 'RSS Error:' strings.
Props ramiy.
Fixes #38861.
Built from https://develop.svn.wordpress.org/trunk@39311


git-svn-id: http://core.svn.wordpress.org/trunk@39251 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-11-19 01:56:31 +00:00
Sergey Biryukov a1f285641f REST API: After [39306], move `author_ip` argument to the correct place.
See #38822.
Built from https://develop.svn.wordpress.org/trunk@39310


git-svn-id: http://core.svn.wordpress.org/trunk@39250 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-11-19 01:51:30 +00:00
Sergey Biryukov 5ded4db04c REST API: Merge and clarify some permission error strings.
Fixes #38857.
Built from https://develop.svn.wordpress.org/trunk@39309


git-svn-id: http://core.svn.wordpress.org/trunk@39249 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-11-19 01:46:32 +00:00
Sergey Biryukov b1ed607578 Text Changes: Merge and clarify some permission error strings in the admin.
See #38857.
Built from https://develop.svn.wordpress.org/trunk@39308


git-svn-id: http://core.svn.wordpress.org/trunk@39248 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-11-19 01:38:31 +00:00
Sergey Biryukov 529e242a39 I18N: Merge two 'ERROR:' strings.
Props ramiy.
Fixes #38860.
Built from https://develop.svn.wordpress.org/trunk@39307


git-svn-id: http://core.svn.wordpress.org/trunk@39247 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-11-19 01:09:30 +00:00
Sergey Biryukov 4afa19184a REST API: After [39302], clarify `author_ip` parameter in error message.
Properties of objects should not be translated, and therefore are pulled out of the translation strings.

Props ramiy.
Fixes #38822.
Built from https://develop.svn.wordpress.org/trunk@39306


git-svn-id: http://core.svn.wordpress.org/trunk@39246 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-11-19 01:06:30 +00:00
Sergey Biryukov 0f31b1da72 REST API: Merge two similar permission error strings in `class-wp-rest-comments-controller.php`.
We're checking if `current_user_can( 'moderate_comments' )` here, not the specific comment permissions.

See #38857.
Built from https://develop.svn.wordpress.org/trunk@39305


git-svn-id: http://core.svn.wordpress.org/trunk@39245 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-11-19 00:10:31 +00:00
Sergey Biryukov 9cb0a09d1f REST API: Merge two similar permission error strings.
Props ramiy.
Fixes #38857.
Built from https://develop.svn.wordpress.org/trunk@39304


git-svn-id: http://core.svn.wordpress.org/trunk@39244 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-11-18 23:53:30 +00:00
Mike Schroder e12d3813f0 Media: Allow override of PDF setup for multiple pages or DPI.
After [39187], WordPress started loading only the first page of a PDF.

This is appropriate for performance, but made it impossible to
write plugins that read other pages without overriding `load()`.

Introduces `WP_Image_Editor_Imagick->pdf_setup()`, to allow an override
to change WordPress' rendering DPI defaults or which pages are loaded.

Fixes #38832. See #38522, #31050.
Props markoheijnen, joemcgill, mikeschroder.
Built from https://develop.svn.wordpress.org/trunk@39303


git-svn-id: http://core.svn.wordpress.org/trunk@39243 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-11-18 22:22:32 +00:00