Always return a wifi configuration object, even if android doesn't
Remove chipset selection code, layout had already been changed
Turning serval off while in call should not crash, fixes #68
Prevent crash if no files or folders are returned
Add permission to access profile images on later versions of android
Reduce code complexity for creating database
Ensure notificaion is removed if call is not actually in progress, fixes #69
Remove folder picker animation to improve perception of speed