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.
#8763 Removed overflow: auto from v-panel-content, v-accordion-item-content, and v-view classes; use v-scrollable class in elements that should scroll instead