Moves active model serializer dependency to core.
Moves active model serializer dependency to core.

volontariat/voluntary-ember_js,volontariat/voluntary-ember_js,volontariat/voluntary_core_module_emberjs,volontariat/voluntary-ember_js,volontariat/voluntary-ember_js,volontariat/voluntary_core_module_emberjs,volontariat/voluntary_core_module_emberjs,volontariat/voluntary_core_module_emberjs