Replace Toolbar With ActionBar / AppBar In GLTestApp

[bleege]

The current test app makes use of a Toolbar on top of the existing ActionBar. Let's go with the ActionBar on it's own as it offers more builtin features out of the box that will make adding features easier in the future.

http://www.google.com/design/spec/layout/structure.html

[ljbade]

Interesting. The reason I went with the toolbar is that it appears to be the proper way to have action buttons that can overflow into the drop menu.

Perhaps Google have changed the way ActionBar stuff is supposed to behave in Android 5?

Also while you are at it you might as well make the GPS button a proper toggle button control instead of the manual toggle I have.

[ljbade]

@bleege Did you do this in the Activity change?

[bleege]

This will implemented via Material Design refactor in #1856.