More Animation Changes

-Updated the Buildings prefab
+Get rid of the actor mesh thing error.
+Make it the shield look better
-Made invisible text field that blocks the problem area when not in use
(it catches the focus to prevent it from messing up)
-Fixed interaction between asteroids that hit cities and problem area
+If you didn't complete the conversion in time
+If another asteroid crashes while you are working
+If you get one right while it is close to the cities