add test frame to UIScene_Editor
add switch loading method to buttonTest
add switch method to checkBoxTest
add switch method to UILayout and UIIamgeView
add switch method to LoadingBar, ListView , pageView and scrollView
add switch method to all the GUI tests
fixed missing zlib.h header path
check if _itemsPerRow == 0 to avoid divide by zero
Merge pull request #7330 from MSOpenTech/wp8-v3-fix

WP8 v3 build fix
Merge pull request #7267 from andyque/addBinaryFileTests

add tests to GUI