Improved checkBrowserCompatibility() function of raphael-chart - it handles the loading issue with RaphaelJS
Bumped raphael chart version number
Simplified the raphael-chart's ```checkBrowserCompatibility()``` implementation
Simplified (again) the checkBrowserCompatibility of raphael-chart
Merge branch 'feature/StaticFallback' of github.com:datawrapper/datawrapper into feature/StaticFallback

Conflicts:
	plugins/visualization-raphael-chart/static/raphael-chart.js
Merge branch 'feature/StaticFallback' into develop