Fix an off by one error causing most keys to be shifted one to the
right, due to the missing backslash (\) key in the top row.

Fix an off by one error causing most keys to be shifted one to the
right, due to the missing backslash (\) key in the top row.

- Added layout files for 50 key and kishsaver
- Not yet working (some USB issues on AVR to debug)
- Fixed an OSX issue when building AVR
- Cleanup

- Automatically downloads the kll compiler if not found
- Added capability files to each of the module that currently have them
- Split modules.cmake so kll.cmake could influence build targets (also needs info from modules.cmake)
- Updated .gitignore for kll compiler directory
- Added documentation on how to manipulate layouts using CMakeLists.txt
- Cleanup of old layout files