Added API setPopupWidth(String) to ComboBox. The suggestion pop-up now
has three different width modes:
1. Legacy "null"-mode: width is determined by the longest item
caption for each page. This looks & feels like the old implementation.
This is the default mode
2. Relative to the ComboBox. e.g. 100%
3. fixed width using any CSS definition
Change-Id: Id60a6996ee82726196b84d50c2d0d18a6cfb5ebf
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.