added the ability to scan href's of anchor tags, including subdomains, conical links, and query strings.

Fixed the filtering of page to be less aggressive on element code and better on the actual text displayed on the page. For example, "est" as a filter word will no longer hide elements with "test". "tes", would hide, "test" though so that you are guarded against plural forms of the word.

Changed options page wording to be more clear