ME: added a duration tag in common_tags.py
ME: added a duration tag in common_tags.py

smn/onadata,spatialdev/onadata,spatialdev/onadata,GeoODK/onadata,sounay/flaminggo-test,smn/onadata,GeoODK/onadata,hnjamba/onaclone,hnjamba/onaclone,smn/onadata,piqoni/onadata,spatialdev/onadata,hnjamba/onaclone,spatialdev/onadata,GeoODK/onadata,qlands/onadata,smn/onadata,sounay/flaminggo-test,sounay/flaminggo-test,sounay/flaminggo-test,GeoODK/onadata,piqoni/onadata,qlands/onadata,piqoni/onadata,hnjamba/onaclone,piqoni/onadata,qlands/onadata,qlands/onadata