Fixed handling if an assigned controller gets disconnected
Menu, Back and Volume buttons are ignored for controller selection now
Added mroe meaningful controller strings / string names
Minor cleanup
Fixed the default value for add_controllers in Android.cpp
Removed redundant import of InputDevice
Added gui switch to enable / disable touch vibration (haptic feedback)
Merge pull request #81 from bwRavencl/multi-controllers-fixes

Multi Controller Fixes