[gtk+] (4 commits) Non-fast-forward update to branch wip/csoriano/bookmarks

[Carlos Soriano Sánchez <csoriano src gnome org>]

The branch 'wip/csoriano/bookmarks' 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:

  19d0f22... gtkplacessidebar: add API for emulate drag sources
  5f214c6... gtkfilechooserwidget: show drop hints on gtkplacessidebar
  1eac219... gtkplacessidebar: add new bookmark icon
  13ec099... gtkplacessidebar: make insensitive invalid drop targets

Commits added to the branch:

  45c522c... gtkplacessidebar: add API for emulate drag sources
  684f63f... gtkfilechooserwidget: show drop hints on gtkplacessidebar
  61075cd... gtkplacessidebar: add new bookmark icon
  8325aca... gtkplacessidebar: make insensitive invalid drop targets