Delete page permission table, seems very unused
There was also an un-migrated index
Update doc for what code does to extra_context

It said to return context, but the return value is ignored
and the superclass method ends in .update()
Merge pull request #72 from skyhood/batiste-extractx

Update doc for what code does to extra_context
Merge pull request #71 from skyhood/batiste151

Fix bad migrations (page_permission table is not required anymore, page.content.type didn't have the index migrated)
Enable south in the example
Test the automatic slug renaming thoroughly and fix a bug associated with it.
Merge pull request #70 from skyhood/master

$.query was deleted by error.
Cache object having parent
Cache ancestors
Getting content is real heavy, cache it
Another content object cache
Cache children of the tree
Filtering published pages in cache too
Mangle the key a bit more
Return value fix
Merge branch 'further_caching'