Jupyterlab-server

- Bug fix: base_url was used twice. [36](https://github.com/jupyterlab/jupyterlab_server/pull/36) ([afshin](https://github.com/afshin))

- Don't have NotFoundHandler match lab\* [35](https://github.com/jupyterlab/jupyterlab_server/pull/35) ([vidartf](https://github.com/vidartf))

- 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))