[gtk] (11 commits) ...Merge branch 'wip/exalm/polish' into 'master'

[Matthias Clasen <matthiasc src gnome org>]

Summary of changes:

  8176b0c... inspector: Remove list header style (*)
  131683f... inspector: Use a GtkSeparator for the object details toolba (*)
  bec9141... inspector: Use .toolbar for toolbars (*)
  3aee23c... inspector: Use tabular figures for list position label (*)
  7aa34cb... inspector: Add a separator under toolbar in css editor (*)
  2ac8132... inspector: Use consistent GtkTextView margins (*)
  0053160... inspector: Stop using .sidebar for the recorder page (*)
  2aa2b7f... inspector: Clean up the .list style (*)
  516dc79... inspector: Use .list for property list as well (*)
  83319a3... inspector: Expand the controllers column view (*)
  c953e3c... Merge branch 'wip/exalm/polish' into 'master'

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