UserModel is aggregated by ThreadModel, one UserModel can be aggregated by many ThreadModel's
Added exported files
Italicize ThreadModel to indicate it is abstract
Fixed exports
aesthetic changes
added exports
fixed export png
added notes.txt
Added alert dialog to create new user
Added alert dialog for sort preferences
Merge branch 'side' of https://github.com/CMPUT301W14T07/Team7Project into side
Added text box to user alert dialog
added SortPreferencesModel
multiple changes