commiting working cache code, along with temp code for refreshing all caches
not cache related. Added close button to popups and made download table look better
Merge branch 'development' of https://github.com/itpir/adt into development
Merge branch 'bug-update_cache' of https://github.com/itpir/adt into bug-update_cache
Merge branch 'development' into bug-update_cache
added more validation for media items and removed temporary code