add kate project files
remove whitespace
First round of fix. this is working fine for me now

- remove old split view from available options, since they make things confusing and possibly crash
- add default shortcuts similar to what iTerm2 uses on OS-X
- allow to close a terminal simply, be it a multi-terminal view or a full window, same key for same task.
- simplify code where I could, reusing existing signals instead of creating new ones...