grandparent id. Oops. This caused navigation from photo back up to
album to be broken.
Also update Photos_Controller to use the active sort order.. it was
still hardcoded to use the id. It's more efficient now, yay.
Fixes ticket #340.
Kohana makes this type of transition fairly straightforward in that
all controllers/helpers/etc are still located in the cascading
filesystem without any extra effort, except that I've temporarily
added a hack to force modules/gallery into the module path.
Rename what's left of "core" to be "application" so that it conforms
more closely to the Kohana standard (basically, just
application/config/config.php which is the minimal thing that you need
in the application directory)
There's still considerable work left to be done here.
