Merge "InteractionWithSafe" development

* `department` has been removed from the fields the Constellation users has to input to create users. Therefore is not being stored in Cassandra anymore when creating a user. Consequently, the column `department` has been removed from the creation statement of the columnfamily.

* Added `publicRSA` and `privateRSA` columns to `Principals` columnfamily. Added the two parameters to the necessary functions used to create a new user.

* I commented 3 `console.log` I had regarding the feature: creation of users with CSV files. That feature is in "stand by" for now. I will take it up later on.