#118: Added query logging section to Troubleshooting page
Merge pull request #139 from django-nonrel/feature/issue118

Query logging FAQ entry
Trigger a travis build against develop.
Fixed .travis.yml to trigger builds.

This fixed the build issue on the master branch.
Dropped ci testing against python 2.5

Django 1.4 dropped support for python < 2.6 anyway. [ci skip]
Fixed distinct to work after 9d1e9f4 compiler cleanup.
Fixed a failing tests to work with pymongo >= 2.2
Added django-dbindexer to develop requirements.
Mark `multiple_database.QueryTestCase.test_subquery` as expectedFailure.

I couldn't manage to find a combination of `djangotoolbox` and `mongodb-engine`
on which the test pass. I'll open a ticket to make sure to investigate if
it ever passed because `djangotoolbox` is actually raising a 'subquery are not
supported yet exception`.
Make sure `unittest.expectedFailure` is imported correctly on python 2.6
Update requirements.txt for new repo locations
Update repository URLs for installation
Upgraded the compiler with mongodb-engine prototype compiler so it can handle nested ANDs and ORs
Removed a print statement
Fixed a bug with A() objects not using operators
updated the version number
Fixed some more issues with the A object
Fixed some more issues with the A object
Fix for weird DB permission error
Added WriteConcern=1 by default