* Fixes#76 and fixes#47 by removing concrete product models from longclaw. Abstract classes are provided as a starting point and concrete models moved to the project template
* Products fully customisable (and therefore product index). Work on #76
* Removes concrete product models from longclaw, allowing customisation. For #76 and #47
* Product base testing
* Reorder imports for tests
* Drop py3.3
* Add back admin.py
* Update page panels
* Add tests to products