and add a few clarifying comments

ensures minified js is installed

start slowest first

exports login_main and logout_main

- build-main.js is a separate file, spawned with process.fork to allow parallel builds
- gulp js builds main.min.js for each js application

update Dockerfile

with new current repo layout

re-enable highlighting for ipython kernel

Default mode is now `text` and not ipython.
so the `ipython` mode was not dispatched.

s/jupyter_notebook/notebook

Store codemirror config in only one location

Fix list_running_servers when runtime dir not created

I ran into this now that we actually use $XDG_RUNTIME_DIR, because it's
cleared on restart.

Closes (once backported) #EntropyOrg/p5-Devel-IPerl#40
and jupyter/notebook#88

don't list profiles in nonexistent directories

s/ipython_parallel/ipyparallel

Remove git submodule utility functions

We no longer use submodules

data_dir is not .ipython/kernel anymore.

On OSX, items ~/Library/Jupyter/ which screw up where things find
kernels and anyway is already at the beginning of the search paths
lists.

disable clean-css restructuring

this is a buggy optimization that breaks some css

replace jupyter_nbformat by nbformat

Also replace the `import nbformat as nbformat` by `import nbformat`
and change the name of the installed egg.

Set contentType to JSON when sending session models

ipython_kernel is ipykernel

remove SYSTEM_NBEXTENSIONS_DIRS

allow OPTIONS requests for api endpoints (to enable CORS)

s/jupyter_nbconvert/nbconvert/