Fix security issues.
Fix security issues.

- Enable hashing in saltAndHash
- Change regex that allows href='javascript:' to startsWith
- Make user website links work (even when Lift-Web/Java escapes cookies)
- Filter out email addresses from user website links

debiki/debiki-server-old,debiki/debiki-server-old,debiki/debiki-server-old,debiki/debiki-server-old