On changing the date slider, ALL layers become NDVI

[christophfriedrich]

This is due to NDVI still being hardcoded in this line:

wasserbilanz-webviewer/main.js

Lines 36 to 40 in 8a9d85a

	function getSourceForDOY(doy) {
	return new GeoTIFF({
	sources: [
	{
	url: 'all/geotiff_NDVI_DOY/NDVI_DOY_'+doy+'.tif',

On startup the layers are displayed correctly though (until the slider is changed).