Merge pull request #454 from bmeeks8/master

Snort Pkg 2.5.8 Update to incorporate Ermal's comments and fix a few bugs
Save and restore state of "$pkg_interface" variable on exit.
Add a rule counter for display at the bottom of page.
Fix it so Select All also gets Snort GPLv2 Community Rules.
Fix PHP out-of-memory error with large rule sets and IPS Policy display