add uncaught exception handling code
added initial debug logging code - WIP
add debug log enabling to settings
use more standard ACTION_SEND_MULTIPLE action for sending data to mail
apps
fix problem occured when user did not send the email but returned to
home and the following link shares showed the original data
print more info about intents into debug log
add test case for debug log setting
increase target SDK version to Andorid 4.4W
fix accidentaly bug when selecting app chooser in app selector activity
renamed app selector to app chooser
fix many lint problems
set SDK version to 20 in remaining places