fix for directory locations
tijdreeksen aan map toegevoegd.
select point in time series -> update choropleth
* add 'chart date' label
* remove chart frame
-style-issues wrt line thickness/smoothness
-remove optimization where we only set non-zero values (non-zero-values from previous selection don't get replaced with zeros..)
-add labels for time series charts
-include labels as js, get labels from shapefile.
* chart-animation added