Add support for referencing a series by the Message-ID of one of its patches in the URL

[jnikula]

For example, http://patchwork.freedesktop.org/mid/[email protected] would redirect to http://patchwork.freedesktop.org/patch/60615/ similar to how http://mid.gmane.org/[email protected] works.

The main requirement would be to have some base URL you could simply append a Message-ID to. And absolutely without the angle brackets < > that patchwork likes to keep around Message-IDs.

This would make it easier to find and pass around patchwork links.

[jnikula]

Bonus feature for patch series, find the series with any message-id belonging to that series, using a different base URL.

[dlespiau]

Part 1 done: http://patchwork.freedesktop.org/patch/msgid/4b5190547226b82cc34ee5250c7949cee8c90f78.1440681672.git.jani.nikula@intel.com and: https://lists.ozlabs.org/pipermail/patchwork/2015-October/001806.html

What's left here is the series part. Changing the title accordingly.