Easier folder creation and configurable target folder for dataset upload

[philippotto]

• add "Add Folder" button next to "Add Dataset" button
  
• dummy context menu when rightclicking into the blank space of the sidebar:
  
• clicking "add dataset" will encode the active folder id in the url so that the import view can use that to initial the new target-folder selection
  
  

The target folder functionality is currently front-end only (it simply uses the API to move the DS after the upload). This won't work if the dataset needs to be converted first. Not sure whether this should block the PR. The backend part probably won't happen in this year. Merging this now could be confusing to users when the DS doesn't pop up in the desired folder. However, this can be confusing right now, too

URL of deployed dev instance (used for testing):

• https://folderfollowup.webknossos.xyz

Steps to test:

• use context menu in sidebar on folders and on blank space
• use new add-folder button
  • use the target folder UI to change the folder (should have initialized to the folder that was active in the dashboard)
  • upload something (zarr or normal)
  • dataset should appear there

Issues:

• contributes to [Follow-up] Folder Enhancements #6669

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(Please delete unneeded items, merge only when none are left open)

• Updated (unreleased) changelog
• Ready for review

[daniel-wer]

Nicely done! Worked well during my testing, both for dataset upload and remote zarr import 👍

The backend part probably won't happen in this year. Merging this now could be confusing to users when the DS doesn't pop up in the desired folder. However, this can be confusing right now, too 🤔

Since the frontend gets to know whether the dataset needs to be converted, a simple toast/message could help to avoid confusion. It could state that this is not supported yet and that the dataset needs to be moved after the conversion.

[philippotto]

Since the frontend gets to know whether the dataset needs to be converted, a simple toast/message could help to avoid confusion. It could state that this is not supported yet and that the dataset needs to be moved after the conversion.

Good idea! Instead of showing a prompt, I used the antd form validation which also works nicely, I think.

and the normal case (as before)

[philippotto]

@daniel-wer I updated the front-end to incorporate the newest changes by @fm3 so that the target folder also works with datasets which are converted after upload. The target folder must be specified now and the front-end ensures that the user may upload the DS to the folder by using the disabled property of the antd tree component. The "Allowed Teams", on the other hand, are not required anymore during upload. Also, the "Allowed Teams" warning/hint in the dataset settings were removed because there are not really necessary, anymore (due to the cumulative permission concept, users should be far more likely to have the necessary permissions).

[daniel-wer]

Very nice, that datasets that need a conversion can be uploaded to a specific folder now, too.

During testing I noticed

• When selecting "Add Dataset" from a folder, the target folder is preselected which is nice. However, when trying to upload, webknossos complains that no target folder is selected (manually selecting the same folder fixes the issue). See screenshot
  
• The target folder preselection is also performed for folders the user doesn't have edit permissions for and which, therefore, couldn't be selected manually, because their entries are disabled
• [Optional] When selecting "Go to Dashboard" after a successful dataset upload, it would be cool to auto-activate the target folder so the user immediately sees the uploaded dataset

[philippotto]

@daniel-wer Thank you for your testing feedback! I incorporated the first two points. I agree, the third point would be nice, but I decided against it for now due to the priority/cost ratio.

[daniel-wer]

LGTM, works as advertised 👍