Simple access checkers which check if the specified entity exists.
Simple access checkers which check if the specified entity exists.

It can be checked by checkAccess function in particular view, but the idea is that out of bands errors are raised only by AccessChecker.

--HG--
extra : rebase_source : f231afca621b86836a96ff51d8a598eb35cbe867

SRabbelier/Melange,SRabbelier/Melange,SRabbelier/Melange,SRabbelier/Melange,SRabbelier/Melange,SRabbelier/Melange,SRabbelier/Melange,SRabbelier/Melange,SRabbelier/Melange