Fix #258: deliteful/ViewStack: Kittens demo is broken
The ViewStack height was 0
Relayout the demo with a LinearLayout
Add a default height to the ViewStack + doc
Fix Back button visibility under IE (display: initial is not supported by IE)
Reverse the back transition
deliteful/Select: adapt code, test, and doc to latest dstore
List is now using dstore 0.2.0.
Remove unused method.
Add RadioButton