CMS-2365: Upgrade Model 212 fails if any of chopped columns has string value large
Merge pull request #135 from enonic/CMS-2365

 CMS-2365: Upgrade Model 212 fails if any of chopped columns has string ...
CMS-2365 : Switched the reference from tContentVersion to tContent, so it goes from tContentVersion, thus working for all.  The previous commit would only work for the main version of the content.