Projector needs dictionary of admitted delegates to draw the delegates table

[jwinzer]

Original design: The projector shows a delegate board while voting is active. In order to know which delegates to show the projector got a dictionary (key: keypad number, value: list of user_id) via a GET request.

AdmittedDelegatesView get_admitted_delegates

This code has been removed. Let's discuss how to handle this. Do we want to use a RESTView instead?

[FinnStutzenstein]

As discussed:

• Ids of all admitted delegates are saved in autorized voters models
• the projector should get all users (this has to be restricted later) and the authorized voter model
• for all votes the client should find the authorized voter (Implement the find_authorized_voter on the client)
• implement your delegate board -- I'll ad the oldstyle seating plan later with a config to change between both