Amending Base10 to slightly darker `#202122` to fulfill WCAG
requirements in connection to Accent50.
Also removing all PNG fallbacks as they are only used in JS-only.
Bug: T248393
Change-Id: I07fa4e23320763a634e5340ab125634842b86454
Replacing all colors with current WikimediaUI palette ones.
Also:
- changing two files over to LESS in order to
- make use of central gradient mixin instead of one with
unnecessary vendor extensions and
- concatenating selectors in one occurrence.
Bug: T174237
Change-Id: I5d302f29b079f6abdba5abf3b58d6ba254e1a4ac
when appearing on right side of screen
Languageselect was mostly fixed in 354378, but I forgot the
settings ones, so the triangle just disappears when
switching dialogs currently. This follows up on that and
properly fixes it.
Sidebar callouts now appear toward content regardless of
where they're appearing from, or the language
directionality. Triangles are now consistently alligned to
the top of the callout (same position in languageselect and
compact language links) to avoid issues with it appearing
over a scrollbar.
Sideways callout triangles (carets) are consolidated into a
single rendering approach and mixin across compact language
links and toolbox language selector.
Bug: T161586
Change-Id: I7717e26525ac527ede486796f49083ed40ee7d4f
