[geary] (17 commits) Created branch wip/778276-better-flag-updates

[Michael Gratton <mjog src gnome org>]

The branch 'wip/778276-better-flag-updates' was created.

Summary of new commits:

  acbb540... Allow reporting problems to the client from Geary.Imap.Mini
  90a13c7... Add a Cancellable for terminating internal folder operation
  6455187... Modernise EmailPrefetcher a bit.
  713d75a... Rename Geary.Nonblocking.Mailbox to Queue, make constructed
  0cc82f6... Split test running up into test-engine and test-client.
  b30cc5e... Add an operations queue to GenericAccount for server operat
  f083b1b... Refactor GenericAccount::new_folder a bit to make it less v
  f30f5bc... Rework GenericAccount to use an AccountOperation for loadin
  0e61a42... Convert folder unseen update into an account op, only sched
  0829c2a... Make sure local folders are always loaded before remote fol
  3967748... Fire folders_contents_altered when we alter folder contents
  3fa586d... Don't sync on email send, sync when sent mail is saved.
  986a095... Increase the remote folder refresh interval.
  4b89e7a... Bump move commit timeout to something reasonable.
  e1e78d3... Move impl for ReplayAppend and ReplayRemoval actually into 
  bf6adc7... Pay attention when the server notifies us of altered flags.
  01e3e69... Minor doc comment update.