Improves the `report` command in bulk reporting mode. This syncs it with the behaviour in the [intropy reporting tool](https://github.com/dbosk/intropy/tree/85dee9cbeb3671f129404884fdb7f530bbe4e63b/adm/reporting).
1.15
Not secure
Changes the way the key is derived with which the cache is encrypted. Previously we generated a key. Now we derive a key using PBKDF2 and the user's LADOK credentials. This is a workaround for systems that don't have a keyring available.
1.14
Not secure
Bugfix for get_student_data_by_uid_JSON
1.13
Not secure
Readds accidentally removed get_user_data_by_uid_JSON from Chip's methods.