Temporarily disable Transifex submission from master

This is necessary until we release Oscar 0.8 final, otherwise string
changes on master might break translations for 0.8.
Merge branch 'releases/0.8'
Input type changed to hidden

Input type should be hidden, not checkbox.
Merge pull request #1472 from theikkila/master

Input type changed to hidden
Quieten image importer

This image importer is quite old and probably shouldn't be in the oscar
package (but in the sandbox itself) as it's only used by the sandbox.
This change ensure its logs messages are quieter when running "make
sandbox".
Improve order history templates

Smooth out a few creases and ensure displayed messages make sense.
Minor imports tweak
Add readthedocs badge to README

See http://blog.readthedocs.com/badge-support/
Fix typo
Extract mixin
Add the brilliant jquery.inputmask

From https://github.com/RobinHerbots/jquery.inputmask, revision
197265d9d69880ebfa62b55db273f68205b195fe
Use inputmask for date and time widgets
Merge pull request #1476

Conflicts:
	oscar/forms/widgets.py

Fixes #1476
Relax dependency restrictions for South and django-compressor

Oscar 0.7 works ok with later versions of these two packages and so we
open up the restrictions in setup.py to avoid forced downgrades for
Oscar projects.

Fixes #1477
Bump version to 0.7.3 and update release notes
Merge branch 'releases/0.7'

Backporting the changes for 0.7.3.

Conflicts:
	docs/source/releases/index.rst
	oscar/__init__.py
	setup.py
Switched mimetype to content_type because of deprecation

The mimetype keyword was deprecated in Django 1.5,
https://docs.djangoproject.com/en/1.5/ref/request-response/#django.http.HttpResponse.__init__

The content_type keyword should be used instead.
Merge pull request #1488 from binarydud/mimetype_deprecated

Switched mimetype to content_type because of deprecation
Pin Webtest dependency

As 2.0.12 introduces a new feature which is used by an Oscar test.

We should really pin all these dependencies as using ranges is just
asking for trouble. I'll do that soon.
Fix tests for order status updating

The hidden widget means the tests have less set-up to do.