update version for 3.0pre1 release
avoid flashing the Push button when rebuilding the list of apps
update version for 3.0pre2dev development
Merge pull request #328 from mykmelez/release-3.0pre1

update version for 3.0pre1 release
prototyped simulator screen mock

- emulate portrait/landscape lock
- adjust window size
- send mozorientationchange event
added rotate button (flip screen orientation when orientation is unlocked)
cleanup SimulatorScreen (remove unused code and unnecessary component instance properties)
cleanup GlobalSimulatorScreen module (and remove setTimeout resize workaround)