Issue #1214344 by wiifm, msonnabaum: Fixed "misc/progress.js" is not being...

Issue #1214344 by wiifm, msonnabaum: Fixed "misc/progress.js" is not being included when "Aggregate JavaScript files." is used.

core/modules/system/system.module

@@ -1121,7 +1121,7 @@ function system_library_info() {
     'title' => 'Drupal progress indicator',
     'version' => VERSION,
     'js' => array(
-      'core/misc/progress.js' => array('group' => JS_DEFAULT, 'cache' => FALSE),
+      'core/misc/progress.js' => array('group' => JS_DEFAULT),
     ),
   );