* extend image effects
add a basic light clock
* add alpha values to rainbow
* some effect tuning
* make seconds hand optional and change color to yellow
make blue hours hand always visible
* - effects now can use qt image effects
- rainbow swirtl is now suitable for any led layout - including matrix
* fix rainbow effect
* effect: add radialGradient
* fix some js errors
* optimize code
* try fix travis test not working as expected
* fix default config files
* fix config
