Rename since it's no longer a helper.
Rename the test class.
Add ORM::unloaded_instance() that gives us a new version of the current
model but preserves whatever other database operations were in the chain.

follow-on to 88b6865f472b4203b9ef04d4b99e3310ecb960d2
Reload the root item in test_i_can_edit() so that we get a fresh
related AccessCache model after adding the new group.  Now that we're
using relationships which cache their results, we'll have to do more
reloading.

All Access_Test tests now pass!
Merge branch 'kohana_3' of github.com:gallery/gallery3 into kohana_3
Replace self:: with Module::
Finish off implementing this driver.  It's not fully tested, but I
expect the unit tests will shake out any remaining bugs.
Fix up Akismet tests and get them working.  I undid Shad's changes to
get the setup/teardown to be more comprehensive - in general we trade
speed for cleanliness there since it's very hard to avoid polluting so
we put the onus on the setup code to make sure things are clean (within
reason).
Rename test to drop 'Helper'
Rename class to match file name.
Kohana_404_Exception is now HTTP_Exception_404