URL Rewriter

Rewrite URLs according to a custom regex when accessing a web page.Based on "Host name rewriter" by Mattias Lundberg.

URL Rewriter edits certain URLs, whether typed in or linked, via a set of rules before navigating to the URL. A rule consists of a regular expression specified in capture groups, a capture group number to replace, and the replacement text for that group. When you click on a link or type a URL in the address bar, it is checked against each of the rules. If a matching rule is found, the text of the specified capturing group number is replaced with the specified text.

Example:
- Regex: ^(http[s]+\:\/\/.*\.)(toothboiler)(\..*\/watch\?v=.*)$
- Group number to replace: 2
- Replacement text: youtube

- If you click a link for "http://www.toothboiler.com/watch?v=abcdefg", it matches the regex rule and capture group 2 ("toothboiler") is replaced with "youtube" to result in "http://www.youtube.com/watch?v=abcdefg".