[FIX]structure: a bug somewhere creates 2 first nodes with the same pos 2. If the node is moved up and as no previous node, force it to be on pos 1
[FIX]structure: a bug somewhere creates 2 first nodes with the same pos 2. If the node is moved up and as no previous node, force it to be on pos 1

git-svn-id: 08a866106b41c57cec985b5deddde5835bf030d4@18321 b456876b-0849-0410-b77d-98878d47e9d5

changi67/tiki,oregional/tiki,changi67/tiki,changi67/tiki,tikiorg/tiki,changi67/tiki,tikiorg/tiki,tikiorg/tiki,oregional/tiki,changi67/tiki,oregional/tiki,oregional/tiki,tikiorg/tiki