Added webapi system and first attempt for the core webapi.

Added user profile system to the core module.
Moved /user/{uid} from auth module to core module.
Added possibility to add html before and after a cms form. (useful to add a form before or after, as nested form are forbidden).
Now theme can be installed using roc install command.

modules/session_auth/persistence/cms_session_auth_storage_sql.e

@@ -11,8 +11,6 @@ inherit
 
 	CMS_PROXY_STORAGE_SQL
 
-	CMS_SESSION_AUTH_STORAGE_I
-
 	CMS_STORAGE_SQL_I
 
 	REFACTORING_HELPER