[ER] Updated translations.
[Snails] Clear current mail view on selecting new tag.
[Snails] AccountThreadWorker::markAsUnread().
[Snails] Account::MarkAsUnread().
[Snails] Added "Mark as unread" action.
[Snails] Removed unused variable.
[Snails] Added GetFolderPath() to vmimeconversions.
[Snails] Rewrote SyncIMAPFolders() with std::transform.
[Snails] Added MessageChangeListener class.
[Snails] Notify about the marked messages on change.
[Snails] Support disabling guard in the change listener.
[Snails] Pass the listening information to AccountThreadWorker.
[Snails] Instantiate MessageChangeListener.
[Snails] Proper current row handling in unread setting.
[Snails] MarkAsUnread -> SetReadStatus.
[Snails] Just call Update() on the model in handleGotUpdatedMessages.
[Snails] Still mark fully fetched messages as read.
[Snails] Don't automark messages as read, wait for the server.