rdf:li

[lgiessmann]

handle rdf:li elements when there is also contained a rdf:_n element:
<rdf:Bag>

<rdf:li rdf:resource="item-a"/>
<rdf:_1 rdf:resource="item-b"/>

</rdf:Bag>

the internal structure should be one rdf:_1 (item-b) and one rdf:_2 (item-a)

currently the following situation is not handled as expected:
<rdf:Bag rdf:nodeID="anyNode">

<rdf:li rdf:resource="item-a"/>

</rdf:Bag>
<rdf:Bag rdf:nodeID="any_Node">

<rdf:li rdf:resource="item-b"/>

</rdf:Bag>

the internal structure should be one item rdf:_1 (item-a) and a second item rdf:_2 (item-b)