-fix different processing of url alias between gui and background updates. (could create a invalid pf rule)

-fix different processing of url alias between gui and background updates. (could create a invalid pf rule)
-ignore text after space character (which allows to use the spamhaus drop/edrop lists)
What do you think about adding one more parameter to this function, and use it to check for port/portrange aliases too? It would cleanup even more the code. You can also rename it to something like 'parse_aliases_file'.