wp8: build C# extension (phase 4)
wm: fix issue with start app minimized at device boot

Conflicts:

	platform/wm/rhodes/MainWindow.cpp
rhom: metadata: support hash as a parameter
Video Capture Extension
Merge branch 'master' of https://github.com/rhomobile/rhodes
wp8: namespaces of C# extensions optimized
Common JS API: native layer call can be platform-dependent now
wp8: build C# extension (phase 5; almost done)
wp8: C# extensions build fixed
Merge branch 'master' of https://github.com/rhomobile/rhodes
Merge branch 'master' into new_barcode_android