[Ticket: #636][Ticket: #633]

[Ticket: #630][Ticket: #631][Ticket: #632]

[Ticket: #615]

[Ticket: #626]

[Ticket: #623]

[Ticket: #624]

A number of bugs have been reported,
some of which this commit should fix.

[Ticket: #617][Ticket: #620][Ticket: #621]
[Ticket: #622]

set the link of the feedback room to the room, since the question list can no longer be accessed directly

During the last meeting, some problems were pointed out.
This commit should fix some of them.

With the new quill format, some cleanups and
unnecessary double checks are no longer required.
This leads to a much better performance.