Fix SlidingMenu sensibility
cleanup fix for pull request
Don't scroll before layout has happened.

Instead scrolling is deferred until layout has been performed. This avoids the
use of a Handler.post() in onPostCreate(), which means that additional show*()
calls performed by a sub-class of SlidingActivity in onPostCreate() work as
expected.

Also derive SlidingMenu from FrameLayout instead of RelativeLayout as there
seems to be no reason to use RelativeLayout.
"GONE" viewBehind to prevent taking part in onMeasure() when SlidingMenu hiden.
Merge remote-tracking branch 'ksperling/master'
Merge remote-tracking branch 'GoMino/sensibilityFix'