[epiphany] (3 commits) Non-fast-forward update to branch mcatanzaro/#736

[Jan-Michael Brummer <jbrummer src gnome org>]

The branch 'mcatanzaro/#736' 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:

  6600b45... gsb-service: ref self for lifetime of update thread

Commits added to the branch:

  a4ee4eb... Close window after drag/drop last tab to another window (*)
  253295c... Fix too many actions disabled in incognito/automation mode (*)
  cefc3e3... gsb-service: ref self for lifetime of update thread

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