Handle multiple users editing current animation list at the same time

[DomGarguilo]

Current behavior:
If two users are adding/changing animations at the same time, only the most recent update sent to the server will take affect overriding any previous changes.

Expected behavior:
If two users are making changes at the same time, their changes should somehow be merged instead of only one set of changes taking affect. For example if two users each add a new animation, we would want both of them to be inserted instead of one just not appearing. If a user deletes an animation while another user is making changes that should be fine.

[DomGarguilo]

Maybe could have a button if you want to edit the animations and only one person can hold the “edit lock” at a time. The edit lock can exist on the server and just check when someone has it before issuing the lock.