Unified movie images in DB and MovieImage. Also added new seed for the posters in the movies_images table.
Renamed UserTrait to TraitUser.
Introduced public imageAlt property for images.
Fixes due to changes of the image management in the database.
Finished porting of Gallery presentation.
Unified "Not Found" and "Gone" for all movie presentations and galleries.
Introduced convenience method for retrieving the position and total count of movie images.
Fixed routes for movie image details presentations