Outbound Queueing; Channel URL support; minor fix.

It's official, server requests are now split into three queues to increase performance on connection and other times when Konversation is gathering background information.

If you find information is coming in too slowly, or that you are getting disconnected unexpectedly on connection, open the queue tuning widget with /queuetuner to change the sending rates.

If you've already been testing it, you may wish to reset to default values from the queuetuner's context menu as the default rates have doubled.

I'm still looking for feedback, let me know if these values flood you off somewhere reliably.

Channel URL support (328 numeric): Channel URLs provided by some networks will now appear in the proper view, with a translatable message.

Minor Fix: Channel mode +c is no longer considered to be +m in the GUI.