/login route must be refactored as accordance to #19

[Syntaf]

The /login route will be changed when #19 is implemented in order to handle multiple portals. The following should be changed:

• A new flag will called loginType will be passed alongside the TOKEN to specify what portal the user is trying to login to

• If the user is attempting to login as an exhibitor:

  • Check permitted_exhibitors table of conference to see if user is allowed to login
  • If yes then we proceed as normal (add user if doesnt exist and return TOKEN regardless)
  • If no then return error for frontend to tell user they are not allowed access

• If the user is attempting to login as a conference organizer:

  • Check organizers table to see if user is allowed to login
  • If yes then we proceed as normal (add user if doesnt exist and return TOKEN regardless)
  • If no then return error for frontend to tell user they are not allowed access

[stevenbrookslv]

This was done with last commit I made. If upon review it seems like it isn't actually done, we can re-open the issue.