Give background back to Github button on how-to
Fix stroking on choropleth map
Allow user to change line graph colour scheme
Add two more lines to line chart data
Add bubble chart
Thin CSV for scatter diagrams
Highlight line on line chart
Merge branch 'master' of github.com:CDECatapult/CDECatapult.github.io

Conflicts:
	assets/stylesheets/application.css
	howto/line-graphs/line-graphs-example-multi.css
	howto/scatter-plots/index.html