Use iframeResizer, fix holoviews js and css issues, build TUD OCW website, website fixes, Docker update

Several converter.py fixes

remove checking

remove {}

typo: , -> .

get iframeResizer js from a site

use rawgit

add jquery

newest version of jquery

add jquery-ui

add holoviews js

add require.js

change order js imports

comment out holoviews slider edits

add css

add correct js and css

change order of js

clean up converter.py

eval all notebooks

update Dockerfile and env.yml

remove MAINTAINER from Dockerfile

move holoviews sliders to bottom of plots

use holoviews css and js from correct commit

remove static unused files

Several edX iframe-resizer fixes

only w2 in CI

remove saving of iframeresizer js

use hv.css in the template

change heightCalculationMethod

add a remove_header option in split_into_units

load javascript asynchronously

add try except for removing index from list

all js and css in one file

add IPYNB_IGNORE_CSS=True in pelican config

change order of css and js load...