Fixed 5px gaps between vertical layout slots (Firefox/Opera) after doctype was changed to HTML5 (#8294). Refactored paintable.scss to widget.scss (this time for real)
Standard themes in SCSS form, updated CompileDefaultTheme (#9223)
Conversion performed for most themes trivial, just rename file and wrap
in a mixin. For chameleon compounds, also nesting used. In some cases,
related small files combined in a single SCSS file
Chameleon accordion and select contain fixes other than just a missing
semicolon.