First commit  - Beta v0.9

Work for v1.0
* Issue when dual mode timer is stopped - sometimes the secondary inverter layer doesn't hide, leaving a white block over the bottom half of 'Tap Me'
* Some datatypes can be reduced down from longs
* Pebble SDK 2.0 Beta 4 - Persistent storage stops working after a while (retest when fixed)
* Improvement - round off ActivityBar corners so they look less odd in dual mode