Inline video and images

Removed the need to UrlLinker lib and replaced it with something that
does inline images/video and cleaned up a few small bits.
Encoding issues

* Updated my server to php 5.3 and fund that php_auth_user has been
replaced with Remote_user
* A bit of fun with encoding
* Made the new url coding a bit less tricker happy - would encode "..."
which was tiresom..
Relative local url for inline images problem

* stopped the inlineimage function from added http:// to start of local
images
* Stopped loader from updating the innerhtml all the time if the html
was the same - annoying with inline images