ImportError: cannot import name 'JVisualizer' from 'open3d' since update to Version 0.10.0.0

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**Describe the bug**
I recently updated my Open3D installation to version 0.10.0.0 and since can't use JVisualizer. Today, I recognized that the same error also appears in the example provided in the Docs at http://www.open3d.org/docs/release/tutorial/Basic/jupyter.html . When I downgrade to Open3D==0.9.0.0, everything works as expected.

**To Reproduce**
Ensure, that you use Open3D==0.10.0.0. Try to import JVisualizer using `from open3d import JVisualizer`. See the error message printed to the output.

**Expected behavior**
open3d is able to import JVisualizer.

**Screenshots**
See the Docs page of Open3D at http://www.open3d.org/docs/release/tutorial/Basic/jupyter.html

**Environment (please complete the following information):**

- Operating system: OSX 10.15.4
- Python version: Python 3.7.4
- Open3D version: 0.10.0.0
- Is this remote workstation?: no
- How did you install Open3D?: pip
- Compiler version (if built from source): -