Small refactoring on uIGR-code:
- general improvement:
  - change to S-CIC-mode with reset button iff S-CIC changes his mode (in pairmode a manual longreset does not force the uIGR switching to S-CIC-mode)
  - simple code formatting allowing other to implement their ideas more easily
  - add source for PIC16F684: higher internal clock rate allows to use interupt steered controller reading