Feature request: initiliaze mob and other settings in URL which can be bookmarked

[rzijp]

Initializing the mob timer is a repetitive process for us to fill in the names for the team and to set the sequence of roles. It would be great if we could add the names as URL parameters, such that we could bookmark that URL and skip the manual steps.

The initialization based on the parameters should only happen once though: when a timer is already in use, it shouldn't get reset when someone opens the bookmark by accident.