[libadwaita] (9 commits) Non-fast-forward update to branch wip/exalm/dialogs

[Alexander Mikhaylenko <alexm src gnome org>]

The branch 'wip/exalm/dialogs' was changed in a way that was not a fast-forward update.
NOTE: This may cause problems for people pulling from the branch. For more information,
please see:

 https://wiki.gnome.org/Git/Help/NonFastForward

Commits removed from the branch:

  93a0edf... stylesheet: Fix legacy dialog action area
  0043a7d... stylesheet: Split dialog styles into a separate file

Commits added to the branch:

  fceea5f... stylesheet: Redo color swatches (*)
  d650c24... stylesheet: Add _palette.scss (*)
  432844a... stylesheet: Use palette colors instead of magic values (*)
  a352459... stylesheet: Replace #fff by white (*)
  a904e7d... stylesheet: Add foreground colors to the palette (*)
  c2ba6ba... stylesheet: Define foreground and background colors (*)
  f102b74... stylesheet: Simplify public color casts (*)
  2a28bce... stylesheet: Fix legacy dialog action area
  64077db... stylesheet: Split dialog styles into a separate file

(*) This commit already existed in another branch; no separate mail sent