move south migrations to 'imagestore.south_migrations' package, extend travis tests, testapp project renamed to testproject and now have latest django layout
Fixed tests.
Added Python 3.4 support.
Added tox.ini file.
Added Django 1.6 and 1.7 support.
Merge branch 'master' into django_1_7
django 1.7 migrations
Merge remote-tracking branch 'KrzysiekJ/python3-django17' into django_1_7

Conflicts:
	.gitignore
	.travis.yml
	test/testapp/manage.py
fixed testing settings and configs, make more django and python compatible