Detailed Description

Currently, users can restrict a volume annotation to certain magnifications, but most users don't know about this. When annotating large areas in mag 1, this puts a lot of strain on frontend/backend (long waiting time etc).
One idea is to emit a warning in the frontend when many updateBuckets are sent to the server. Ideally, user interactions that cause updates to large areas would be discarded in the first place. Maybe the upsampleVoxelMap code could have a limit that throws an error?

Context

• Specific to long-running jobs (set jobsEnabled=true in application.conf)
• Specific to webknossos.org (set isDemoInstance=true in application.conf)