UK: add public and ona to _reserved_usernames
UK: add public and ona to _reserved_usernames

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