Whitespace cleanup

[tormodvolden]

Signed-off-by: Tormod Volden [email protected]

[per1234]

If you're going to do it, why not go all the way?:

• Consistent indentation style across all code files (either spaces or tabs, not both)
• Remove trailing whitespace
• Use spaces to align comments (tabs are used at some places in Keyboard.cpp)

[CLAassistant]

All committers have signed the CLA.