Fix mismatched double quotes in filer admin templates
Merge pull request #434 from aptivate/fix_mismatched_quotes

Fix mismatched double quotes in filer admin templates
Clarify static files
Merge pull request #437 from nephila/feature/staticdoc

Clarify static files
Add the owner_search_fields option to FolderAdmin.

In order to make it easier to work with custom User models, I have added
an owner_search_fields option to the FolderAdmin class, which

  1.  Allows users to declare which search fields they want.
  2.  Attempts to discover which fields are available on the User model
      and using those.

This makes it a lot easier to avoid errors when there are custom User
models.