Refactored out methods wrt lazy-loading views in @AndroidFragment and @AndroidActivity.

@CustomViewGroup has the same magic powers as the previous two.
@AndroidView is no longer necessary.

Fixed some NPEs as a result from the refactoring.
Added the gift of recursion to the xml parsers.
Merge branch 'merge_upstream_refactored_out_view_lazy_loading_getters' into develop

Conflicts:
	Xtendroid/src/org/xtendroid/annotations/AndroidFragment.xtend
	XtendroidTest/src/org/xtendroid/xtendroidtest/adapter/adapter.xtend