[Ruby Forum] Hard-coded fonts problem is fixed

Several people (including Nobu Nokada on this list) complained that
11-pixels fonts are not readable on their browsers.

The stylesheet has been tweaked (it says 11pt instead of 11px now). Not
it will adjust itself to the monitor size, and follow the broser
settings for smaller/larger fonts.

If you had a problem with small fonts on www.ruby-forum.org, please
check it again and email me off list in case of any problems.

Best regards,
Alexey Verkhovsky