Unambiguous/uncontrovercial cleanups in widgets
Merge pull request #2068 from ussuri/widget-cleanups-and-improvements

Unambiguous/uncontrovercial cleanups in widgets
Set box-sizing globally for widgets
Centrally set box-sizing
Merge pull request #2070 from ussuri/widget-cleanups-and-improvements

Widgets cleanups
Merge remote-tracking branch 'upstream/master' into improve-font-rendering

Conflicts:
	widgets/lib/common/spark_widget.css