[Doctrine] Inherited fields are not supported in the DQL completion

[stof]

It looks like fields inherited from the FOSUserBundle User mapped superclass are not found when providing autocompletion for fields in the DQL.
It may be related to the fact that FOSUserBundle 2.0.x-dev has the mapped superclass in a non-standard location. I haven't tried with mapped superclasses in a standard location (I don't have any in this project)

[Haehnchen]

Inherited are not supported at all. annotation just working on class extends path, there is not different for foreign method classes in phpstorm.
all other mappings need some additional logic. fosuserbundle also use xml mapping which is not in #319 :)