Added QuizletHTTP class
Make auth work
refactored preferences saving
refactored preferences saving (2)
fixed back button and added error processing
authorization done
loading my sets
RetrieveSetTask
Preferences refactored
Added base HTTPTask class
refactored to use new classes Card and CardSet
saving sets and cards to local storage
reading data from local storage
sync when no data to display
Added button to Action Bar
android:configChanges for several activities that do async work
show cards in a fragment
refactoring
add base class for menu-like activities
refactoring