Merge pull request #57 from sharoonthomas/develop

Use flash and get_flashed_messages from Flask
Remove test module to separate module

* Moved to: https://github.com/openlabs/trytond-nereid-test
Improve templating with ModuleTemplateLoader #52

* Added ModuleTemplateLoader which loads from installed modules
* Updated tests to use the ModuleTemplateLoader in addition to
  the DictLoader (which substitues function loader)