Gsoc2016 Keyboard Work Breakdown

Get keyboard events

Possible approaches:

• Install a global event filter or something similar to get all Qt keyboard events. Easier approach, but I think this won't let us differentiate between different physical keyboards.
• Access keyboards with a lower level API.

Reference: http://doc.qt.io/qt-4.8/eventsandfilters.html

don't break tooltips, make them read current keyboard preset.

add CO (if not already existent) to enable/disable controllers (make a special one for keyboard controllers?). this is to keep support for the "enable keyboard shortcuts" option of the options menu.