Snort Pkg 2.5.8 Update to incorporate Ermal's comments and fix a few bugs

Snort Pkg Version 2.5.8
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Change Log
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Date:  06/01/2013
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This update is to incorporate Ermal's comments from the initil 2.5.8 code review and to fix a few other small issues reported by forum members.  There is no version update associated with this request.  The package remains at 2.5.8.

Bug Fixes:
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1. Add code to the ALERTS and BLOCKED tabs to insert zero-width space characters after the colons in IPv6 addresses to give browsers a word break opportunity.  This prevents extending past the column boundary when displaying an IPv6 address.  This issue was reported by a forum user when displaying IPv6 addresses on these tabs.

2. Fixed a display issue with the page footer not centering on the Update Rules screen due to a dangling DIV tag.  This issue was reported by a forum member using the "nerve center" theme.

3. Added code to check for the existence of a $config array item before attempting to use it.  This was missed earlier.

4. Added more descriptive error messages for the Rules Download page when it runs in console mode from a crontab entry.

5. Fixed a spelling error in a field label on the PREPROCESSORS tab.

6. Fix a few minor HTML formatting issues to improve display of GUI elements (such as rounded corners on tabs where they were missing).