[geary] (8 commits) ...Merge branch 'wip/account-editor-refinements-v1' into 'master'

[Michael Gratton <mjog src gnome org>]

Summary of changes:

  c9bfab4... Typo fix (*)
  7ed2898... Tidy up account editor's undo/redo action state management (*)
  fdb9243... Move common account editor pane in-app notification impl to (*)
  aa27c96... Improve account editor's doc comments (*)
  cc07e54... Allow adding/modifying an account to be cancelled when in p (*)
  db85a34... Don't validate managed accounts when validating account ser (*)
  33ae35f... Fix critical when IMAP login command is cancelled (*)
  3000334... Merge branch 'wip/account-editor-refinements-v1' into 'mast

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