Added live tiles
Improved live tile functionality
Code cleanup and refactoring

Split activity data class into its own file, removed poor formatting for
getters and setters.
Posting Photos

Completed the api method for posting photos, as well as added in a
dialog to get a caption for a photo after selecting one. Also Made a
minor tweak to the selectedListModel getter to use a default if it's
null, and there's one available. This will prevent having the list tab
open and no list selected.