Starts TRLogic class. Refs gradha/theranking-ios-candidates#3.
Implements thumbnail network query. Refs gradha/theranking-ios-candidates#3.
Adds photo and user models. Refs gradha/theranking-ios-candidates#3.
Implements model parsing. Refs gradha/theranking-ios-candidates#3.
Sets global thumbs from new info. Refs gradha/theranking-ios-candidates#3.
Merge branch 'feature/t3_request_models' into develop