Formatting change.
Making the TouchPadView compatible with the eclipse graphical layout
tool.
Making the keyboard button toggle the soft input keyboard rather than
forcibly show the soft input keyboard.
Formatting Change
Refactoring the RFBKeyEvent to take an action and not take a modifier.
Added the F-keys to the key translator.
Moved the layout of the valence activity to an xml file rather than in
code.
Replaced context menus for special keys with drawers to show/hide the
extra keys.
Added more special keys.
Allowed multiple modifier keys to be pressed at the same time.
Simplified the RFBKeyEvent class and removed the SpecialKey class.

fixes #3