fix yail for orange block and get block

Change-Id: Ib496130b938b02df70712847db33e6ef4d8535d6
Add GWT Standard Theme CSS.

Add GWT Standard Theme CSS. This results in things looking a little
different, but also results in some GWT features working that hadn't
before (like transparency under modal dialog boxes). This change adds
the CSS and supporting images.

Change-Id: Ie68625a0f99f14a72f30c4da33cd7da3eab79687
New Welcome System.

Supply a Splash Screen whenever App Inventor is started. Note: This
feature is controlled by the AppInventorFeatures.showSplashScreen()
function which defaults to false. You will have to set it to true to
see the effect of this change. The splash screen that is displayed
is a "plug" value, branding should supply the actual iframe to use.

Change-Id: I4cc96a7f72a9709fa1df1c0de4122b73528b7681
Fix toolbar so Connect to emulator and companion are in drop down menu

Change-Id: I4cb242e03694805d1c589b7dea8372418e267735
Generate YAIL option only visible to Admin

Change-Id: Ia64faf0ffe720ba7f3cff350b88aab1aee4fc43e
Make sure the Connect to Companion times out.

Bugfix to ensure that the "Connect to Companion" dialog eventually
times out.

Change-Id: Ifc1e8e250831b2a28791c1dc8d0d697ff5410364
hides boxes around Palette drawers, added with gwt.css

Change-Id: I646b5cee2468a0e8462a544134a4ab10b6ce6cb1
fix spacing on show warning button

Change-Id: Ib263c9558ab27a30f5ce428717ed05dd9f35e192