Jupyterlab-server

- Workspaces [34](https://github.com/jupyterlab/jupyterlab_server/pull/34) ([afshin](https://github.com/afshin))

- Fix path handling on Windows [33](https://github.com/jupyterlab/jupyterlab_server/pull/33) ([blink1073](https://github.com/blink1073))

- Add a theme handler [32](https://github.com/jupyterlab/jupyterlab_server/pull/32) ([blink1073](https://github.com/blink1073))

- Require jsonschema library. [30](https://github.com/jupyterlab/jupyterlab_server/pull/30) ([afshin](https://github.com/afshin))
- Allow an admin to override extension schema defaults. [29](https://github.com/jupyterlab/jupyterlab_server/pull/29) ([afshin](https://github.com/afshin))
- Remove MathJax and Streamline Handler config [27](https://github.com/jupyterlab/jupyterlab_server/pull/27) ([blink1073](https://github.com/blink1073))

- Add error message option [26](https://github.com/jupyterlab/jupyterlab_server/pull/26) ([blink1073](https://github.com/blink1073))
- Update settings handler to support JSON with comments. [25](https://github.com/jupyterlab/jupyterlab_server/pull/25) ([afshin](https://github.com/afshin))

- Add console error on error page [24](https://github.com/jupyterlab/jupyterlab_server/pull/24) ([blink1073](https://github.com/blink1073))