Updated sample app project to use ARC and iOS 5 deployment target.

(ARC requires iOS 5.)
UI layout tweaks for iOS 7.
Merge pull request #215 from triplef/master

UI layout tweaks for iOS 7
Fixed missing cell separators on iOS 7 iPad.
Fixed blurry text due to non-integral table view header heights.
Merge pull request #217 from triplef/master

More layout tweaks for iOS 7
Fixed warnings when compiling for 64-bit
Merge pull request #218 from triplef/master

Fixed warnings when compiling for 64-bit
Merge branch 'master' of git://github.com/futuretap/InAppSettingsKit
change vertical cell padding according to jacopos design