percentage calculation methods for stats added
stats controller refactored, xibs moved into storyboard, minor code cleanings
gravatarId storage implemented, login logic updated for changes, stats controller updated
default user key removed
guard for empty api key added
cell xibs move to the storyboard
gravatar error fixed
back button customisation added
stats date formatter fixed
iOS 5 compatibility
1. PSTCollectionView pod added
2. UICollection view switched to PSUICollection view macro
collapsable header logic fixed, check for uncollapsed added, so we will always present at least one uncollapsed level