Also add PK for TableRow Objects when making links. 
Also add PK for TableRow Objects when making links. 


lsaffre/lino,lino-framework/lino,lsaffre/lino,lino-framework/lino,lsaffre/lino,lino-framework/lino,lsaffre/lino,lino-framework/lino,lsaffre/lino,lino-framework/lino