[geary] (13 commits) Non-fast-forward update to branch wip/728002-webkit2

[Michael Gratton <mjog src gnome org>]

The branch 'wip/728002-webkit2' 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:

  34d0584... Re-enable composer empty body checking and draft save timer
  a8bcba6... Only prompt to when closing composer if message is not blan
  a170c1e... Minor TimeoutManager optimisation.
  8cb811a... Don't run slow timer tests unless specifically requested.
  4b09612... Fix not being able to save some inline images.
  a80ce0a... Allow ClientWebView resources to be loaded via either cid o
  d52ee15... Re-enable inserting inline images in the composer.
  4f379d7... Cleanup code, registration and memory management for JS mes

Commits added to the branch:

  494b4a7... Re-enable composer empty body checking and draft save timer
  9d65f52... Minor TimeoutManager optimisation.
  40fa822... Don't run slow timer tests unless specifically requested.
  8be0fc0... Fix not being able to save some inline images.
  ba7f1e6... Allow ClientWebView resources to be loaded via either cid o
  a445365... Re-enable inserting inline images in the composer.
  1abfc0c... Cleanup code, registration and memory management for JS mes
  c314f66... Close the composer if the message is blank. Bug 743970.
  8bfcc33... Only save a new draft if the current draft has not been sav
  3136d0e... Minor draft-related code cleanup.
  15fe80d... Tidy up ComposerWidget::should_close().
  381c539... Ensure draft is saved when envelope (from, to, etc) changes
  2b45ef5... Update composer's draft manager lifecycle management.