Remove an "ORM_Iterator" in a comment that I missed before.
Add a missing HTML::purify() call in Movies controller (already in Photos).
The two controllers are now identical if you swap photo/movie and Photo/Movie.
Change "action_show" --> "show".  In K3, the functions can be public without
being accessible by URL, so we don't need these extra checks.
Add \n to JS and CSS links to make the HTML source look a little prettier.
Revise Controller_Admin for K3.
- use before() instead of __construct() and __call()
- rely on routing to call the correct controller and action for us
- remove unused $theme definition and call
Revise Gallery's View class override.
- Remove the render() override since the globals are already added in View::compile()
- Revise the __construct() syntax and naming to match K3.
- Clean up comments.
Use HTTP_Request::GET and HTTP_Request::POST instead of "GET" and "POST".
Merge pull request #285 from shadlaws/fixes_20130411

Fixes 20130411