[FIX] In the case of item link field that allow multiple selection and is mandatory, causing fatal errors


git-svn-id: file:///var/local/code.tiki.org/tikisvn/branches/13.x@52292 b456876b-0849-0410-b77d-98878d47e9d5
[FIX] When Item link that allow multiple items is used, the label in some cases (such as when indexed) only shows the first item


git-svn-id: file:///var/local/code.tiki.org/tikisvn/branches/13.x@52293 b456876b-0849-0410-b77d-98878d47e9d5