Issue 165 refactor users page

[justinliangg]

Change Summary

• Refactored the user's service to use the staff tables for roles instead. This now allows a "role" filter for the users endpoint.
• Have moved the auth check for the pages to a withProtected component instead of using the middleware due to an issue with accessing the database in the middleware.

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• The pull request title has an issue number
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Other Information

• Will look at writing automated tests but this can be merged in prior to that.
• Added a button in the profile popover to set current user as admin. (Only shows up on dev).