Use bridge network status in list-versions.py

@juga added proper support for bridge descriptors in #13 (closed). While list-versions.py is using them it would be better to follow the relay case which is using the consensus to get the currently running Tor versions.

added Backlog S61-O4-Maybe - FINISHED Sponsor 61 - FINISHED labels

changed the description

added Roadmap::Future label and removed Backlog label

removed S61-O4-Maybe - FINISHED label

removed Sponsor 61 - FINISHED label

added Icebox label and removed Roadmap::Future label