Created two rake tasks: one (fake_users) to provide fake user names, emails, employee ids and netids, the other (superuser) to set the first user to be superuser with given name, email and netid
Added rake task that empties all user_profile_fields for existing users
Add rake task to delete all payforms of users.
Added removing photos
Merge branch '213_database-faker' of https://github.com/YaleSTC/shifts into 213_database-faker
Added function is_login_unique() to make sure the rake task does not generate a duplicate login.
Fixed minor merge conflict.
Merge pull request #232 from YaleSTC/213_database-faker

Prevent fake_users rake task from trying to set a nonunique login