[geary] (14 commits) Created branch wip/email-flag-refinement-redux

[Michael Gratton <mjog src gnome org>]

The branch 'wip/email-flag-refinement-redux' was created.

Summary of new commits:

  6cd6bef... Treat ConnectivityManager errors as failure rather than unr
  fd17ce4... Add some unit tests for setting email flags
  c00ab4c... Explicity throw an error when requirements aren't met for s
  b8c47c0... Ensure ImapDb.Folder.set_email_flag_async also works on del
  5c9234f... Pass a email id with a position when setting flags during a
  638ba06... Throw the correct error when email id is not valid for crea
  f968fe9... Replace composer keyboard shortcut with standard widget act
  dbc867f... Scope composer editor shortcuts to the toolbar and web view
  06c0c71... Fix ComposerWebView::is_empty sense
  123bb81... Don't override Ctrl+W to close the composer
  84b4688... Document what actually happens when MoveEmailCommit is exec
  04a8c95... Tweak FetchEmail::describe_state()
  ce5ff41... Reduce email prefetcher debug verbosity a bit
  e3397cb... Add Email.Field.FIELDS to ImapDb.Folder.REQUIRED_FIELDS