Allow all delegates to fully modify to the queue

[tschneidereit]

The following operations would benefit significantly from everyone being able to perform them:

• Add people to the queue
• Remove people from the queue
• Mark the current speaker as done
• Move entries around freely
• Change the type of entries

All of these are motivated by the desire to have queue management not cause hiccups in the actual discussion. E.g., if the current speaker forgets to mark themselves as done, someone has to ask them. If someone wants to speak but just raises their hand, someone else should be able to put them on the list. If there's active discussion about a specific point and someone wants to reply to some other point, it should be easy to move them back in the queue instead of forcing either a suspension of queue usage or jumping between topics. If someone needs more time to formulate their point, they should be able to just move themselves down the list instead of having to have a meta-conversation about it in the room.

The downside to allowing all of this without restrictions is obviously that people might abuse it. I'd argue that that's a people problem that shouldn't be solved with technical means. If people feel differently about this, then perhaps restricted versions of all the above might work, where a group of moderators and the people who added a queue entry could apply all these modifications.

I'll note that this is how the CSSWG operates and it works very well there.

[bterlson]

We do have a chair group, and it may be reasonable to spread the work among the chairs rather than opening this up for everyone. A big reason might be that the added overhead of dealing with all the new UI affordances may increase the confusion delegates are presently feeling. Anyone have thoughts on whether these should be chair functionalities or open to all?

/cc @wycats @leobalter @littledan