doc update
Merge pull request #31 from rbillings/master

Updated local.py
Merge branch '1.4.8'
fixed up view and template for ``view results`` ``cases`` with select_related, etc.
fix many perf issues

* templates that made duplicate calls
* better use of select_related and prefetch_related
* fixed bug in ModelFilter where it made duplicate queries
* added a bunch of indexes to tables