software/ipython_notebook: Add renderjs extension and jupyter config dirs
The following is added:
- Creation of directories
jupyter_data,jupyter_configand subdirectories to put extension/config files in the correct directories (juypter changed policy on where such files should be placed) - Download of [renderjs_nbextension from pypi}(https://pypi.python.org/pypi/renderjs-nbextension) as source egg (contains config, html and js files)
- Sym-linking these files from the egg-directory into the correct directories
jupyter_data/*orjupyter_config/*
Test were requested by @klaus and complete successfully.