Anonymous wall bug fixes

Fixes the following problems:

1. [x] Anonymous wall shows to logged in visitors
2. [x] Nothing shows in the editor after submitting a test it out URL
Does this address the issue that Rogier brought up? 
> If I enter a URL that starts with "http://" it loads it into the editor as "http://http%3A%2F%2Fwww." so it always gives an error message.

If adding query params is as easy as concating strings then why do we have the utils.param() function?