(REBASE PLEASE) start rebasing
Merge branch 'feature/testhandlers' into userstory/can_configure_context

* feature/testhandlers:
  Fix test helpers for DB creation
  Refactoring of createTables function and db related attributes
  Working copy of testing contexts
  moving test_handlers.helpers in test/
Improve helper functions for testing handlers

Initialize DB
Pre-populate the database also with a Tip

Also set username and password attrs of dummy models
Implement unittests for authentication handler
Fix bug in authentication handler

This was found with the unittest ;)
Merge branch 'userstory/can_configure_context' into develop

* userstory/can_configure_context:
  Fix bug in authentication handler
  Implement unittests for authentication handler
  Pre-populate the database also with a Tip
  Improve helper functions for testing handlers
  (REBASE PLEASE) start rebasing