v0.4.0
Removed dependency for Smart project:
    All SmartTextView and SmartButton classes have been replaced with
the default Android versions.
    Some Smart classes are still used, but they have been packaged into
a jar file (/libs/smart_core_compat.jar) so that the Smart project is
not required.

Added a master-detail style settings activity.
Added auto-connect and keep screen on preferences.
Moved more common layout control code into BaseControlActivity.
App now stores data in it's external files dir (SD card / Android / data
/ ...).