Bridge room renames over to Matrix

Bridge room renames over to Matrix

Fix #2699 (closed) and #2700 (closed)

Follow-up to !2123 (merged)

Dev notes

node ./scripts/utils/rename-room.js -o MadLittleMods/hsrhhbsebserbersbrseasdf -n MadLittleMods/hsrhhbsebserbersbrseqwer
node ./scripts/utils/rename-room.js -o MadLittleMods/hsrhhbsebserbersbrseqwer -n MadLittleMods/hsrhhbsebserbersbrseasdf

node ./scripts/utils/rename-group.js -o mmaetasdf -n mmaetqwer
node ./scripts/utils/rename-group.js -o mmaetqwer -n mmaetasdf

Testing strategy

1. From the Gitter webapp run the rename script against a bridged room, node ./scripts/utils/rename-room.js -o foo/bar -n foo/qux
2. From Matrix, notice the bridged room is updated with the new name

Todo

• Rebase on develop after !2123 (merged) merges