1) solved an issue with the resthelper not extracting properly
the email address that ends with ".com"
2) Changed the OBPuser implementation to return the user email
address as "id_"
3) In consequence, had to change some stuff in the connector and
in the tests to keep the revoke and grant of permissions works.
Merge branch 'develop' of github.com:OpenBankProject/OpenBankProject-Server into develop