added dc.min.js
referenced dc.min.js
Merge branch 'develop' into feature/zeitperiode
added d3.v3.min.js
basic chart for 'zeitperiode'
deleted dc.min.js
fixed date parsing-see comment in parseDate
added d3.v3.min.js dependency
removed console output
minor prettifying
Merge branch 'feature/zeitperiode' into develop