Added Konami code and start button pause.

Also fixed some bugs in ColorGradient etc.
Tweaked some parameters to improve performance
(Zack) tuning Flicker and ShootingStar
(Zack) added new modes
Added auto-cycling of modes
Reduced dimmer delta for lantern mode
Fixed MovementTest L/R, swapped konami code mode
(Zack) Added more modes to rotation
Bugfix: added call to onShow for easter egg
(Zack) updates to PulseMode
Updates to SeizureMode
Added Strobe mode and made it konami code mode
Start button toggles auto cycling of modes