Allow blog resources to be served without Celerity

Summary:
Allow skins to serve arbitrary resources without needing to be mapped, so we can have a vibrant community of amateur skinners.

For "basic" skins, just put all the "css/" on the page always.

Includes an image to prove that works.

@vrana, pretty sure this has no impact outside of Phame but it does change Celerity so it might be to blame if there's any weirdness with static resources.

Test Plan:
{F21341}
{F21340}

Reviewers: btrahan

Reviewed By: btrahan

CC: aran

Maniphest Tasks: T1373

Differential Revision: https://secure.phabricator.com/D3719

src/aphront/configuration/AphrontDefaultApplicationConfiguration.php

@@ -155,7 +155,7 @@ class AphrontDefaultApplicationConfiguration
         '(?P<package>pkg/)?'.
         '(?P<hash>[a-f0-9]{8})/'.
         '(?P<path>.+\.(?:css|js|jpg|png|swf|gif))'
-          => 'CelerityResourceController',
+          => 'CelerityPhabricatorResourceController',
       ),
     );
   }