UK: ensure url media links have a hash and are valid urls
UK: ensure url media links have a hash and are valid urls

hnjamba/onaclone,qlands/onadata,GeoODK/onadata,GeoODK/onadata,GeoODK/onadata,smn/onadata,jomolinare/kobocat,spatialdev/onadata,smn/onadata,piqoni/onadata,kobotoolbox/kobocat,smn/onadata,hnjamba/onaclone,kobotoolbox/kobocat,sounay/flaminggo-test,qlands/onadata,spatialdev/onadata,qlands/onadata,piqoni/onadata,jomolinare/kobocat,smn/onadata,sounay/flaminggo-test,mainakibui/kobocat,jomolinare/kobocat,awemulya/fieldsight-kobocat,sounay/flaminggo-test,spatialdev/onadata,hnjamba/onaclone,mainakibui/kobocat,piqoni/onadata,mainakibui/kobocat,kobotoolbox/kobocat,GeoODK/onadata,mainakibui/kobocat,awemulya/fieldsight-kobocat,spatialdev/onadata,hnjamba/onaclone,jomolinare/kobocat,awemulya/fieldsight-kobocat,kobotoolbox/kobocat,sounay/flaminggo-test,piqoni/onadata,awemulya/fieldsight-kobocat,qlands/onadata