Add a WirecloudTestCase class
Add a WirecloudTestCase class

This new class is based on TransactionTestCase and will be used for ensuring
normal wirecloud tests run with a set of predefined settings (for example, using
English as the current locale) instead of relying on having these settings
configured in the settings.py file.

rockneurotiko/wirecloud,rockneurotiko/wirecloud,rockneurotiko/wirecloud,jpajuelo/wirecloud,jpajuelo/wirecloud,rockneurotiko/wirecloud,jpajuelo/wirecloud,jpajuelo/wirecloud