carousel widget item highlighting

fixed some issues w/ image widget also.
added widgets.css
commented out swipe, started to migrate highlights on callouts
Merge branch 'mlippert/widget-refactor'

Conflicts resolved:
	js/widget-image.js
fixed highlighting
make sketch redraw
more files that needed tweaks to match highlight change in callouts
converted to css highlighting, put widgetCallout classes on table and rows