Can no longer find file names for topics and special files

Issue Summary

On api.drupal.org, you used to be able to see the source file name for any entry near the top of the page.

For functions, this has now moved down to the bottom of the page, in a section like:

Code
includes/bootstrap.inc, line 499

But topics and html files no longer seem to have a way to see immediately what file their doc came from (which makes it really difficult to figure out where to look if you want to make a patch). For example:
- http://api.drupal.org/api/group/ajax/7 (that one is not so bad, since all the funcs are listed as includes/ajax.inc, so it can be inferred)
- http://api.drupal.org/api/group/forms/7 (that one is really bad, since functions come from all over -- what if you wanted to patch the @defgroup section?)
- http://api.drupal.org/api/drupal/developer--topics--forms_api_reference.... (I happent to know where that one lives, but it wouldn't be obvious to everyone)