Added CAT control and improved LCD 20x4 display

Will include the CW Decoder (and library) when we have the hardware ready. 

Hope i did the pull ok. Seen that the speed control from james (with U2) was not in our sketch. I left it out as well because I don't think it adds value and I would like to use U2 for either CQ message or Band Switching.

Band Switching can be automated using the CAT Control of course.

73 Johan