fixes python 3.2 compat
apply some pep8 rules
django 1.7 compatibility

fixes python 3.2 compat

apply some pep8 rules

django 1.7 compatibility

fixes django 1.7 compatibility

removes DBNAME env var and force db name to 'concurrency'

travis: exclude mysql with python 3.x

travis: exclude all mysql with python 3.x

django 1.7 plugged application's model handling

code clean and fixes documentation

new travis config. use tox as matrix

new travis config

fixes travis config

updates demo requirements
updates CHANGES
fixes django 1.8dev compatibility
Merge branch 'feature/d17' into develop

* feature/d17:
  fixes django 1.8dev compatibility
  updates CHANGES
  django 1.7 compatibility

Conflicts:
	README.rst
	requirements.pip
	tests/base.py
	tests/settings.py
	tests/test_admin_actions.py
	tox.ini