scene2dui scroll bars can now flip left/right and top/bottom, added ScrollPaneScrollBarsTest to tests
format and alphabetize lists of test classes in test.utils.GdxTests

alphabetize for real now

remove scaffolding, fix fade
fix vKnobBounds.x
add buttons to test for fade and scrollbarsOnTop, used eclipse code formatter, excluded tests list
Merge pull request #796 from jrenner/scrollflip

Scene2DUI scroll bars can change sides, implement scrollbar test, format tests list