website: "irclog" group variable attempts to interpolate strings

[micolous]

At present, the irclog variable attempts to interpolate strings (ala sprintf format strings).

This shouldn't be done, because if you have a irclog URI containing a %, this isn't included correctly in the page. So the value:

http://room-logs.timvideos.us/%23%23lca2015-fp/preview.log.html

Is instead included as

http://room-logs.timvideos.us/                       %23lca2015-fp/preview.log.htm