[gtk] (7 commits) Non-fast-forward update to branch matthiasc/for-master

[Matthias Clasen <matthiasc src gnome org>]

The branch 'matthiasc/for-master' 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:

  e208252... docs: Mention g_file_get_basename
  3be30ab... NEWS: Updates
  7276877... magnifier: Set a css name
  9c0aaad... Adwaita: Set a background for magnifiers

Commits added to the branch:

  dbdc909... Merge branch 'matthiasc/for-master' into 'master' (*)
  e5ec4df... docs: Mention g_file_get_basename
  e3c38e4... NEWS: Updates
  5d59447... magnifier: Set a css name
  a3f3dc0... Adwaita: Set a background for magnifiers
  dab11ea... popover: Change default for cascade-popdown
  7624f66... widget-factory: Make sure we close popover on page 3

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