Use View annotation from FOSRESTBundle
Added clean User serialization
Changed to an string id for Role
Prettier
Added inheritance for Operation entity
Merge remote-tracking branch 'origin/master' into feature/model-abstraction

Conflicts:
	app/config/config.yml
Added /auth/me URL
Bugfixes in User
Added an admin in init.sql
Drop schema instead of database
Added more serialization contexts
Returns an object for one User
Added first Transaction API; can buy
Merge remote-tracking branch 'origin/feature/model-abstraction' into feature/model-abstraction
Added param_fetch_listener to check Get/Post parameters
Better buy flow
Added a "bar" parameter to Transaction
Use ParamConverter everywhere !
Changed User serialization policy
Added /transaction/by-item and /transaction/by-account