PM|AG: fix rake file
PM|BM: add list and hier variables
PM|BM: document list and hier variables on click
Merge remote-tracking branch 'origin/master'

Conflicts:
	_site/dist/js/analytics.js
	_site/dist/js/wiki.js
	dist/js/analytics.js
	dist/js/wiki.js
PM|BM: fix pageName after merge
PM|BM: add event serialisation
PM|BM: add masthead prop
PM|BM: add sessionCamID prop
PM|BM: start to document free vars