Modifies GFFavorites class and adds a GFFavorite class
Impements sending messages
Adds persistence of group fitness data
Adds GFFavorites view and view controller
Sets up the GFFavorites view segue and hooks up table view
Adds properties to GFFavorite and modifies interface of GFFavorites
Fixes startDate and endDate methods
Creates BMContainerButton and makes it superclass of BMAddRemoveButton
Adds elements to favorites table view
Adds cancelledDates property to GFFavorite
Fixes bug with BMContainerButton
Adds methods removeFromIndex to GFFavorites
Implements deletion logic
Moves reloadData and sorting favorites to viewWillAppear method
Adds FPPopover library to project
Adds and implements GFCancelledDatesController
Adds popovers to show cancelled dates for favorite class
Removes selection style of favorites table
Cancelled dates does not show past dates
Fixes fetching logic