Remove code that forced focus to skip from the title field to the editor. Add link to skip to editor to give the user control over their path. Set `aria-pressed` on editor selector buttons to communicate which editor is enabled. Make focus state visible on unselected editor button. Remove `wp_keep_scroll_position` flag used for IE compatibility. Add `role="presentation"` to table used as status info bar.
This addresses a long-standing accessibility problem in the classic editor which created a confusing keyboard navigation path by skipping all content between the title field and the content editor.
Props afercia, rcreators, benjamin_zekavica, sharonaustin, joedolson.
Fixes#29838.
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git-svn-id: http://core.svn.wordpress.org/trunk@58583 1a063a9b-81f0-0310-95a4-ce76da25c4cd
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