TMDB APIv3: update Movie View

update names of retrieved API objects
add Backdrop Gallery
add Alternative titles Column
implement Cast & Crew View and Poster & Backdrop Gallery the lazy man's way
using two completely separate models
pass complete person object to Person View
update Gallery and Previewer for new image retrieval using configuration API

Signed-off-by: Marco Porsch <marco.porsch@etit.tu-chemnitz.de>
TMDB APIv3: update Person View

update names of retrieved API objects
implement Cast & Crew Filmography the lazy man's way using two
completely separate models

Signed-off-by: Marco Porsch <marco.porsch@etit.tu-chemnitz.de>