Fixes for Xcode 6.1 compiler.
Removed paging from ForumCategoryRepository as it is not needed.
Implemented basic Forum List UI.
Implemented basic Forum Thread UI.
Merge branch 'feature/forum-ui' into develop
Updated Forum Category cell UI.
Added and integrated SDWebImage.
Added Forum Category image to the UI.
Merge branch 'feature/forum-category-ui' into develop
Updated Forum Thread cell UI.
Disabled URL caching.
Updated AFNetworking.
Updated Forum Post cell UI.