Revised Control Panel

This time I promise not to close it :)

I fixed some of the issues and will do the rest after this review.
- Added the first line
- Version of control panel has been removed
- row, column in lowercase now
- Removed [8:] and will talk about it next time
- Changed keyboradButton to ControlPanelButton 
- Changed self.cp to self.controlpanel
- Changed import to from com.dtmilano.android.controlpanel import ControlPanel

I have some question about the rest so I kept them for now.

Please review the new request and let me know what other changes should be done.
Thanks