pfSense

fix last commit (#2679)

Resolves #2679. Correct behaviour when port is null to avoid warnings on error log

Resolves #2678. Merge patch suggedted to stop warnings on PHP_errors.log

Use a random exponent for the RSA generation of keys. Its is questionable if its needed to be saved as a value? Ticket #2657

fixed paths

Make a function to get the current theme and use it everywhere rather than duplicating code or missing functions. (Fixes forced themes using the wrong theme for login screen)

Conflicts:

etc/inc/util.inc
        usr/local/www/head.inc

Encode the interface parameter before using it in a redirect

Encode the if parameter before using it in redirects, too.

Encode the if parameter before using it in html

Escape parameters better when managing tables. Fix test to allow deleting subnet entries as well as IPs.