Add demokratikollen.js

With utils:
demokratikollen.utils.parties is a map, so you can do things like
demokratikollen.utils.parties.get("m").color
demokratikollen.utils.parties.get("pp").order
Move demokratikollen.js to right place
Bumped d3 to 3.5.2 and installed d3-tip.
Merge branch 'develop' into proposals-sankey-#72