Add message in UI when raw labels are wrong

[smartnet-club]

While creating new task, Raw label field doesn't work.

Expected Behaviour

Labels created by Raw field

Current Behaviour

Pressing Done, labels appear in Constructor field, but on Submit the error:
Could not create a task
A task must contain at least one label

Possible Solution

Steps to Reproduce (for bugs)

1. Open new task page.
2. Fill Raw field by label json and press Done
3. Fill other task fields
4. Pres Submit

Context

Your Environment

• Git hash commit (git log -1): commit 011c4aa (HEAD, tag: v1.0.0-beta.2, origin/release-1.0.0)
• Docker version docker version (e.g. Docker 17.0.05):
• Are you using Docker Swarm or Kubernetes?
• Operating System and version (e.g. Linux, Windows, MacOS):
• Code example or link to GitHub repo or gist to reproduce problem:
• Other diagnostic information / logs:
  Logs from `cvat` container

Next steps

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[bsekachev]

@smartnet-club

Could not reproduce the issue. Could you please provide labels specification you used?

[smartnet-club]

[ { "name": "7790895000829", "attributes": [ { "name": "color", "type": "radio", "mutable": false, "values": [ "green" ] }, { "name": "name", "type": "text", "mutable": false, "values": [ "sprite bottle" ] } ] }, { "name": "7790895000782", "attributes": [ { "name": "color", "type": "radio", "mutable": false, "values": [ "black" ] }, { "name": "name", "type": "text", "mutable": false, "values": [ "coke bottle" ] } ] } ]

[bsekachev]

@smartnet-club

Please change all type to input_type (Related #1284)
But nevertheless we should add a message if specification is wrong.

[smartnet-club]

Thanks!

[bsekachev]

Let's leave the issue opened till we have added a warning in UI