Add font size controls to test app.
Add font size controls to test app.

google-code-export/pyglet,mpasternak/michaldtz-fixes-518-522,cledio66/pyglet,shaileshgoogler/pyglet,arifgursel/pyglet,mpasternak/michaldtz-fix-552,mpasternak/pyglet-fix-issue-552,shaileshgoogler/pyglet,qbektrix/pyglet,gdkar/pyglet,google-code-export/pyglet,gdkar/pyglet,xshotD/pyglet,mpasternak/pyglet-fix-issue-552,odyaka341/pyglet,mpasternak/michaldtz-fix-552,arifgursel/pyglet,cledio66/pyglet,gdkar/pyglet,google-code-export/pyglet,google-code-export/pyglet,xshotD/pyglet,mpasternak/pyglet-fix-issue-552,qbektrix/pyglet,shaileshgoogler/pyglet,kmonsoor/pyglet,Alwnikrotikz/pyglet,mpasternak/pyglet-fix-issue-518-522,Austin503/pyglet,mpasternak/pyglet-fix-issue-518-522,arifgursel/pyglet,arifgursel/pyglet,gdkar/pyglet,Austin503/pyglet,Alwnikrotikz/pyglet,kmonsoor/pyglet,mpasternak/pyglet-fix-issue-552,arifgursel/pyglet,shaileshgoogler/pyglet,kmonsoor/pyglet,mpasternak/pyglet-fix-issue-518-522,Alwnikrotikz/pyglet,google-code-export/pyglet,odyaka341/pyglet,xshotD/pyglet,mpasternak/michaldtz-fix-552,xshotD/pyglet,Austin503/pyglet,Alwnikrotikz/pyglet,xshotD/pyglet,cledio66/pyglet,Austin503/pyglet,Alwnikrotikz/pyglet,odyaka341/pyglet,qbektrix/pyglet,odyaka341/pyglet,cledio66/pyglet,cledio66/pyglet,mpasternak/michaldtz-fixes-518-522,odyaka341/pyglet,mpasternak/michaldtz-fixes-518-522,gdkar/pyglet,kmonsoor/pyglet,mpasternak/pyglet-fix-issue-518-522,qbektrix/pyglet,qbektrix/pyglet,mpasternak/michaldtz-fix-552,shaileshgoogler/pyglet,mpasternak/michaldtz-fixes-518-522,kmonsoor/pyglet,Austin503/pyglet