Adjust projected motion/topic/election to new detail view

[Elblinator]

closes #2729
closes #3992

[emanuelschuetze]

needs rebase for final test

[MSoeb]

A) PR didn't work. New motions can't be created. The action is interrupted with a error in snackbar and console. Therefor it's not possible to test

errors:

Repro:

1. open a meeting
2. open motions
3. create a new motion. try to save it.

B) Please edit the font style of H2 heading. Font weight should be 700 in the projector to fit the font size in the motion. Even if it wasn't part of the original issue, we should change this so that the appearance between motion and projection is identical.

[MSoeb]

Tried to create a new motion, but it doesn't work. Saving is not possible. A snackbar and a console error appears.

Snackbar error: Ein unbekannter Fehler ist aufgetreten.

Console error:

[MSoeb]

Looks overall fine.

Note: During testing I've got two error messages by reloading the instance login page.

1. By opening the instance for the first time, I got a snackbar error with 'Fehler: Presenter server_time does not exist.'
2. Additionally an error appears in the console which appears again by reloading the login page. Error message: Error: Operator has not fully loaded yet.

I've spoken with @m-schieder and @Elblinator about them. Both errors can't be reproduced by them. Also errors should not appear after merging. It seems to a something related to test instance.