added 6 working tests and stubs for 12 more. Two examples:

* testServerDetails, which checks if the details of a requested
  server returned by the API are the same as on the database.
  Also expects 200 or 203 as the response status code

* testFlavorList, which checks for the list of flavors the API
  returns and expects to be the same as with the Flavors on
  the database. Also expects 200 or 203 as the response status
  code.