Customize: Update dashboard welcome link to point to themes panel in the customizer instead of themes admin screen.

Props celloexpressions.
Fixes #42050.

Built from https://develop.svn.wordpress.org/trunk@41699


git-svn-id: http://core.svn.wordpress.org/trunk@41533 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/includes/dashboard.php

@@ -1567,13 +1567,14 @@ function wp_welcome_panel() {
 	<p class="about-description"><?php _e( 'We&#8217;ve assembled some links to get you started:' ); ?></p>
 	<div class="welcome-panel-column-container">
 	<div class="welcome-panel-column">
-		<?php if ( current_user_can( 'customize' ) ): ?>
+		<?php if ( current_user_can( 'customize' ) ):
+			$customize_themes_link = add_query_arg( 'autofocus[panel]', 'themes', admin_url( 'customize.php' ) ); ?>
 			<h3><?php _e( 'Get Started' ); ?></h3>
 			<a class="button button-primary button-hero load-customize hide-if-no-customize" href="<?php echo wp_customize_url(); ?>"><?php _e( 'Customize Your Site' ); ?></a>
 		<?php endif; ?>
 		<a class="button button-primary button-hero hide-if-customize" href="<?php echo admin_url( 'themes.php' ); ?>"><?php _e( 'Customize Your Site' ); ?></a>
 		<?php if ( current_user_can( 'install_themes' ) || ( current_user_can( 'switch_themes' ) && count( wp_get_themes( array( 'allowed' => true ) ) ) > 1 ) ) : ?>
-			<p class="hide-if-no-customize"><?php printf( __( 'or, <a href="%s">change your theme completely</a>' ), admin_url( 'themes.php' ) ); ?></p>
+			<p class="hide-if-no-customize"><?php printf( __( 'or, <a href="%s">change your theme completely</a>' ), $customize_themes_link ); ?></p>
 		<?php endif; ?>
 	</div>
 	<div class="welcome-panel-column">

wp-includes/version.php

@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.9-alpha-41698';
+$wp_version = '4.9-alpha-41699';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.