* Define a new mail-operation to remove several messages.

* Define a new mail-operation to remove several messages.
* Sync folder after send mail from Draft folder, to actually remove it.
* Sync folder after remove message from outbox, after they were sent.
* Changes on header-view-render to get send-queus of all defined accounts
if they were not in send-queue cache.
* Define a new status for header-view to determine if all messages in
the current selected folder are marked as deleted.
* Allow to enable and disable dimming rules. This feature could
improve performance in operations which require that a lot of headers
were selected.
* Fixes: NB#64359, NB#64321, NB#61954, NB#63011

pmo-trunk-r3114