[easytag] (8 commits) Non-fast-forward update to branch wip/application-window

[David King <davidk src gnome org>]

The branch 'wip/application-window' 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:

  7ed1828... Use same strings in GSettings schema and UI
  41edc8e... Move some GApplication handlers to EtApplication
  bb742a7... Refactor about dialog handling
  f0235b7... Split off main() to a separate source file
  d3ce51a... Remove last uses of deprecated GtkStock
  dac506d... Remove use of deprecated GtkImageMenuItem
  a2cd195... Move tagging code to new subdirectory
  eb34f13... Fix format specifier in GIO C++ wrapper string

Commits added to the branch:

  a3c4513... Use same strings in GSettings schema and UI
  db5738b... Move some GApplication handlers to EtApplication
  16f367e... Refactor about dialog handling
  754e769... Split off main() to a separate source file
  8ada342... Remove last uses of deprecated GtkStock
  8bd0f42... Remove use of deprecated GtkImageMenuItem
  140b89a... Move tagging code to new subdirectory
  09e3991... Fix format specifier in GIO C++ wrapper string