Bump Snort pkg ver to 2.5.5 in Master Package Config
Fix longstanding bug with enable/disable SID code
Merge pull request #424 from bmeeks8/master

Bump Package Config XML file versions for Snort to 2.5.5 and fix one bug
Update squid.inc

GUI option to block user-agent and reply_mime_types like javascript
Update squid_nac.xml

GUI option to block user-agent and reply_mime_types like javascript