Clean up unused directories and files
Upgrade to Sencha 2.3.1
iOS 7 topbar fix

Add 20px of margin for iOS7 topbar
Bugfix: appbar covered selection boxes

The appbar used to cover the selection boxes inside
the Contacts list. This commit implements the resizing
of the navigationview when the appbar button is pressed.
The resizing is done by modifiying the margin-right property.