Updated image tests

Got rid of almost all old style widgets in imageTests page.  Downsized the max carousel space on image carousel.
Show first callout on load
Ritter image carousel demo page

Messed up thing about this page is that the captions do update here.  Maybe the updating bug shows up when there are too many svg containers on a page?
Reflection now works for textbits. Added a width property to textbits to let that work properly. Might need tweaking.
Sketch textbits now have slightly smaller font (10px for letters, 6px for subcripts). Text is now anchored in the middle to make reflection easier. Sketch and animation tests have been updated as well.
Reflections now have a duration, which can create fake-3d effects.

Note: Circles and rectangles cannot "flip" the way polygons and lines can, because they are not represented as a series of points.
Changed test 8 sketch.
Merge branch 'upstream/master'