modified create and update methods from CollectionDAO
Dodanie elementu Commit hash.
dodaje obsluge sortowania kolekcji wg api na dzien 21/03
poprawa literowki
poprawa interfejsow
modyfikacja Media Controller
Merge branch 'Sprint3' into wip_auth

Conflicts:
	src/main/java/com/blstream/myhoard/biz/mapper/ItemMapper.java
	src/main/java/com/blstream/myhoard/controller/MyHoardErrorHandler.java