Keep frame shadow for fullscreen windows #66
Description
Since we decided to implement #49 (so that Plank never hides), fullscreen windows now aren't really fullscreen, there still Plank underneath it. According to Elementary's metacity theme (the window decoration theme), fullscreen windows shall have no drop shadow. That can get a little weird after the users have already become accustomed to the drop shadow.
I understand that the above explanation might be confusing. So here's a normal window with shadow:
Here's the same window fullscreen-ed and without shadow:
