Allow revision Backbone classes to be used on pages other than `revision.php`.

Props ericlewis.
Fixes #30221.

Built from https://develop.svn.wordpress.org/trunk@30128


git-svn-id: http://core.svn.wordpress.org/trunk@30128 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/js/revisions.js

@@ -1139,8 +1139,15 @@ window.wp = window.wp || {};
 		}
 	});
 
-	// Initialize the revisions UI.
+	/**
+	 * Initialize the revisions UI for revision.php.
+	 */
 	revisions.init = function() {
+		// Bail if the current page is not revision.php.
+		if ( ! window.adminpage || 'revision-php' !== window.adminpage ) {
+			return;
+		}
+
 		revisions.view.frame = new revisions.view.Frame({
 			model: new revisions.model.FrameState({}, {
 				revisions: new revisions.model.Revisions( revisions.settings.revisionData )

wp-includes/version.php

@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.1-alpha-30127';
+$wp_version = '4.1-alpha-30128';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.