Add js util function to serialize datetime range
Add js util function to serialize datetime range

pferreir/indico,indico/indico,DirkHoffmann/indico,pferreir/indico,ThiefMaster/indico,indico/indico,DirkHoffmann/indico,pferreir/indico,DirkHoffmann/indico,ThiefMaster/indico,ThiefMaster/indico,DirkHoffmann/indico,pferreir/indico,indico/indico,ThiefMaster/indico,indico/indico