add searchstrings for searching newznab providers excluding the ep= paramater.

Experimental!
Add searchstrings for searching newznab providers excluding the ep= paramater. I've added the episode to the q= param. querystring could look like: ?q=showname%2043.

This is usefull for newznab providers who are missing episode parsing for certain shows. For example, nzedb providers are missing show/ep/season parsing for Anime.