sort dashbord in frontend
fix ordering dirs > notebook> files
don't cleanup egg-info after every setup.py command

would cause `setup.py css` or any other command 
to effectively uninstall a development install.
Add kernel resources directory to package_data
Remove outdated path from MANIFEST.in

package_data seems to be included in the sdist automatically, so no need
to specify schema files etc.
Merge pull request #7212 from takluyver/kernelspec-package-data

Add kernel resources (logos) to package_data
Merge pull request #7172 from Carreau/sort-dashboard

Sort dashbord list in frontend
Merge pull request #7205 from minrk/master

don't cleanup egg-info after every setup.py command
Merge pull request #7214 from hari-allamraju/master

Add tests for history_request in message spec