updated avatar id, refid, fileid to long, added someother helpers as …#60

Afreed-cp wants to merge 1 commit intopodio:masterpodio/podio-dotnet:masterfrom

Afreed-cp:latest-int-to-long-changesAfreed-cp/podio-dotnet:latest-int-to-long-changesCopy head branch name to clipboard