[geary] (6 commits) Non-fast-forward update to branch mjog/493-undo-send

[Michael Gratton <mjog src gnome org>]

The branch 'mjog/493-undo-send' 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:

  142d50a... Make Application.Controller's composer command re-usable
  4c0b0f5... Implement undoing discarded composers
  6c6719a... Implement undoing saved composers
  5860bbc... Don't prompt when closing in-main-window composers
  5ebcd43... Ensure saved drafts are reused when reusing Composer.Widget

Commits added to the branch:

  8b9365a... Make Application.Controller's composer command re-usable
  a1eb88a... Implement undoing discarded composers
  d01863b... Implement undoing saved composers
  ed847db... Don't prompt when closing in-main-window composers
  ad61d77... Ensure saved drafts are reused when reusing Composer.Widget
  5e3e65a... Remove unused method