Update main.html

Replace the HTML server list with the 'legacy' server list. 
Kilburn has indicated the HTML menu is going away and that 99% of players wouldn't be using the 'legacy' list because it requires 2 clicks. This pull request fixes that. 
http://facepunch.com/showthread.php?t=1374457&p=45190134&viewfull=1#post45190134 
http://facepunch.com/showthread.php?t=1374457&p=45190174&viewfull=1#post45190174