Passing in a String[] of Roles

[vs2961]

When we create and update a user, we currently pass in roles one at a time, and you must edit a user multiple times to add multiple roles. Thus, we want to give ourselves the ability to add more than one at the time. This is paired with another issue in the CMS, as we will need to update the form for the creation/update of users.

[AndySok]

For devs: the work has been started, you just need to finish the CMS part of the job.