Fixes: U4-4873 RuntimeCacheRefresher does not remove items when media or content requires cache refreshing & U4-4871 Synced media indexes between load balanced servers do not sync all properties
Merge remote-tracking branch 'origin/6.2.1' into 7.1.3
Fixes: U4-4869 Cannot save tags - was due to adding the loading... message and the ng-if creating a new scope and not targeting the $parent in the view, also fixes up clearing the value with typeahead is used