Add user and wiki preference for realtime editing

[vmassol]

@mflorea

When we designed the realtime toolbar we tried to take into account the “editing alone” use case, but the reality is that we can’t have the same toolbar for realtime editing and non-realtime editing.

See my last comments at Do we need a Cancel button for realtime editing? - #13 by vmassol as I believe we can improve the RT mode and lessen (or even remove the need for a non-RT mode, which we may want to remove altogether one day as it’s more work to support both modes).

@mflorea

set the wiki preference to false by default

I’d continue to make RT editing enabled by default. We need to have it by default, everyone has it and it’s expected IMO.

@mflorea

• if someone tries to edit the same page they will get the edit lock warning; they can force the lock (and enter edit mode non-realtime) or give up
• later you decide to activate realtime editing by clicking on the “Allow realtime collaboration”
• the standard toolbar is replaced by the realtime toolbar

I’d prefer that on the edit lock dialog there’s an option to ask to join editing in RT mode and whoever is editing alone gets a visual notification. Whether they need to accept or the request is granted automatically after N seconds of not responding is to be decided.

But all this sounds complex to me and I feel we need to have a single mode that works well eventually and not support 2 several modes which is more work. I’d be ok to keep the RT mode all the time if we can implement 1) and 2) from Do we need a Cancel button for realtime editing? - #13 by vmassol

WDYT?

Thanks