Make tracing on a scratch dataset annyoing

[daniel-wer]

Unfortunately it's not that easy to change the whole background of the tracing view due to golden layout. Instead, I've made the header look like a construction banner and show a warning. I'll ask for feedback on whether that is sufficient as well or whether they have another idea :)

I also noticed that the zoomstep-warning for volume tracings no longer worked due to golden layout (red border), which is why I removed it. We're showing an error toast anyways.

URL of deployed dev instance (used for testing):

• https://annoyingscratch.webknossos.xyz

Steps to test:

• Checkout the code and change the isScratch property of your datastore to true in the postgres datastores table. Open a tracing and be annoyed :)

Issues:

• fixes show warning for scratch datasets #3352

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• Updated changelog
• Ready for review

[philippotto]

This had no effect anyway or why did you remove it?

[daniel-wer]

I also noticed that the zoomstep-warning for volume tracings no longer worked due to golden layout (red border), which is why I removed it. We're showing an error toast anyways.

Yes, it even screwed up the layout a little bit :/

[fm3]

I’d suggest going ahead with this and not waiting for the last feedback. It comes close to the original feature request, definitely closer than having nothing.
One thing: /wKlive is specific to one installation. Right now, they are the only one to request that feature but I’d keep it generic anyway, maybe? Something along the lines of “Datasets on this Datastore are marked as ’scratch’” should probably be enough info for the mhlab people to recognize what they have to do. What do you think?

[daniel-wer]

I adapted the message, would go ahead and merge if someone approves the PR :)

[philippotto]

👍