[libadwaita] (14 commits) Non-fast-forward update to branch wip/exalm/oapcity

[Alexander Mikhaylenko <alexm src gnome org>]

The branch 'wip/exalm/oapcity' 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:

  bcb1235... stylesheet: Extract $disabled_opacity
  04adcc4... stylesheet: Override disabled opacity in HC
  3e34353... stylesheet: Consistently use dim label oapcity
  5e03406... stylesheet: Fix menu radios in HC
  f4affc1... stylesheet: Fix warning/error entry focus ring in HC
  f36a258... stylesheet: Fix double opacity on spinbutton buttons
  0e0cefe... stylesheet: Fix notebook disabled state
  eae4d60... stylesheet: Use smaller opacity for disabled flat buttons
  b17cf82... stylesheet: Fix scale slider disabled state

Commits added to the branch:

  d090ad0... Revert "stylesheet: Remove .sidebar border" (*)
  a63b67a... Revert "demo: Stop overriding sidebar styles" (*)
  1b15fc1... stylesheet: Make .navigation-sidebar remove background (*)
  e57a73d... stylesheet: Deprecate .sidebar (*)
  2177659... demo: Remove the deprecated .sidebar class (*)
  63466cb... stylesheet: Extract $disabled_opacity
  29227aa... stylesheet: Override disabled opacity in HC
  deabc18... stylesheet: Consistently use dim label oapcity
  fc73179... stylesheet: Fix menu radios in HC
  1e78289... stylesheet: Fix warning/error entry focus ring in HC
  b188f5b... stylesheet: Fix double opacity on spinbutton buttons
  bd9b06f... stylesheet: Fix notebook disabled state
  81f71fc... stylesheet: Use smaller opacity for disabled flat buttons
  18c80b5... stylesheet: Fix scale slider disabled state

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