minor parameter rename
SVProgressHUD pod added
symbolic font fontawesome added
correct answer view added
added custom tab bar controller for showing reviews in modal window
added combined available reviews request to the stats manager
tab bar customisation changed
login state tracking via progress HUD added.
review controller added
critical items review updated (searching through only apprentice items)
correct session finish added to the review controller
added didStart notification for the sync manager
global sync progress indication added through custom tab bar controller
FormatterKit/TimeIntervalFormatter pod added
next review date in stats controller will be formatted with time interval formatter
nextReviewDate request corrected
keyboard issues in review controller fixed
critical items request now matches with strict less rule
stats manager refactored
minor alignment fixes