#2 - creation of activity (empty)
#2 - get the JSON file from the server of tests
#2 - add inheritance
#2 - get JSON file
#2 - correction of the obtention of the JSON file (the last one is not compatible with the used API level) AND conversion into JSONObject
#2 - replace 'Bdd' by 'Db' and look into the JSONObject
#2 - replace label of field of the JSON file by constants
#2 - add one not tested BDD fonction and merge with the master branch