django 1.6 compatibility - remove django.conf.urls.defaults

added exception handling for old django.conf.urls.defaults import behavior
Merge pull request #118 from gabejackson/patch-1

django 1.6 compatibility - remove django.conf.urls.defaults
Fixes #122
Adds test for #122
made it possible to override the queryset class used by TranslationManager
Merge pull request #124 from czpython/test-for-122

Adds test for #122
Merge pull request #125 from czpython/fix-for-122

Fixes #122
Some kind of docs for https://github.com/KristianOellegaard/django-hvad/pull/126/files
Merge branch 'feature/parameterize-queryset-class'
Fix deprecated urls import.
Make travis build python 3.3 and django 1.6 beta.

...and turn off CI email notifications.
Fix django 1.6 import error.

As suggested in https://github.com/KristianOellegaard/django-hvad/issues/116
Fix expectation of number of queries in django 1.6.
Fix select related for django 1.6.

The signature of django.db.models.sql.query.Query.join
changed in django 1.6 because of https://code.djangoproject.com/ticket/19385
Fix use of multiple context managers.
Restore CI email notifications.
Add myself to AUTHORS. :D
Merge pull request #127 from meshy/python3.3-django1.6

Fixes for django 1.6
Sed-replaced all those references to nani in hvad modules. No more
spurious deprecation warnings while using hvad modules.
Added old nani-language-tabs alongisde hvad-language-tabs for backward compatibility.