!!! CHG: Hidden field is "hidden" again. Removed "hide" field. Added TCA Utility to manipulate TCA for the backend
Merge branch 'master' into refactor-hidden

* master:
  [BUGFIX] Setting the album as gallery thumb is now possible
  [BUGFIX] Add missing parameter yagContext to partial rendering
  [BUGFIX] Correction for pageSuccessfullyMarkedAsYAGFolder label
FIX: ItemRepository only counts images without l18_parent
CHG: Hide to hidden in galleryHideFilter
Merge branch 'refactor-hidden'