[geary] Non-fast-forward update to branch mjog/composer-context-loading-fixes

[Michael Gratton <mjog src gnome org>]

The branch 'mjog/composer-context-loading-fixes' 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:

  ba0cf7f... test-client: Init icon factory so composer tests work under

Commits added to the branch:

  5243334... test-client: Fix test failure for new composer widget tests