added mpaa rating, runtime, and cast to stored movie info
added critics consensus to movie info, changed layout of movie activity,
and fixed a json error
fixed bug where json exception would throw since not every
movie on rotten tomatoes has a "critics_consensus" field
commented previous fix
fixed changing a seen movie to not seen, have to download thumbnail and
store it. also added check to prevent index out of bounds on similar
movie list on rating page