compile error in WidgetUtil.h - NULL is not a keyword in c/c++

- until now the error stayed hidden by other includes (ma.h)
Merge pull request #494 from chovus/ThreeThreeOne

compile error in WidgetUtil.h - NULL is not a keyword in c/c++
MOSYNC-3327. Adjusted android orientation mechanism.
MOSYNC-3327. Fixes to iOS and idl orientation.
Merge pull request #496 from mvasiliniuc/ThreeThreeOne_OrientationRefactorization

Orientation refactorization
Merge remote-tracking branch 'github_origin/ThreeThreeOne' into github_sandbox_threethreeone
MOSYNC-3341. Fixed options menu problems on android.
Small change of constant use in android runtime. Code review done by Florin without Jira involvement.
MOSYNC-3341. Refactored names in OptionMenuItem android class.
Merge pull request #499 from mvasiliniuc/ThreeThreeOne_OptionMenu

MOSYNC-3341 OptionsMenu created with icons do not work on Android 4
Merge pull request #487 from spiridon-alexandru/ThreeThreeOne

MOSYNC-3283 and MOSYNC-3301 fixed; MOSYNC-3338 - partial fix: iOS and Android
MOSYNC-3338: implemented the insert child functionality for horizontal and vertical layouts; MOSYNC-3354: remove child now works as it should (every child is shifted inside the grid structure after a remove)
Merge remote-tracking branch 'github_origin/ThreeThreeOne' into github_sandbox_threethreeone