Decide when, how, and who shall delete obsolete Git branches
Originally created by @intrigeri on #8616 (Redmine)
e.g. post-release? post-merge? once a year? the release manager? the sysadmin team? What kind of privileges are needed to do that?
Blueprint: https://tails.boum.org/blueprint/delete_obsolete_Git_branches/
Parent Task: #8617 (closed)