[geary] (19 commits) ...Merge branch 'wip/17-noisy-problem-reports' into 'master'

[Michael Gratton <mjog src gnome org>]

Summary of changes:

  827db39... Provide common service status tracking via ClientService (*)
  a637a6b... Remove auth failure prompting from the engine (*)
  20447c8... Provide common account and service status tracking via Acco (*)
  62665bf... Set default account and client service status to something  (*)
  e7c6da9... Add initial support for showing/hiding account status as it (*)
  5293960... Rename ClientService.Status.OFFLINE to UNREACHABLE (*)
  f80d041... Add and hook up Retry buttons to service status inforbars a (*)
  0e9f18c... Don't consider service state unknown to be offline (*)
  20a53f2... Rework how auth failures are propagated by the IMAP stack (*)
  34ce1dc... Fix failed IMAP commands being treated as an invalid server (*)
  b74d600... Tidy up Imap.Command API a bit (*)
  2da01b2... Implement client-based password and auth failure status pro (*)
  961d8b4... Tidy up client controller a bit (*)
  3b3528f... Refine handling of errors when opening account (*)
  92353bf... Add Geary.ErrorContext class for passing rich error context (*)
  4ef8105... Show details for status-based service problems (*)
  a641ac1... Restart all effected services with a generic service status (*)
  84a450b... Clear account status UI for an account when it is closed (*)
  fcc658a... Merge branch 'wip/17-noisy-problem-reports' into 'master'

(*) This commit already existed in another branch; no separate mail sent