This gets rid of the length == outerLength-2 hack in getDataFromNode()
and will make it easier to implement similar logic in selectNodes()
Change-Id: I1294350b67ca3eefde2b7fe9fea0bc6d8b90f772
* Makes it simpler in the linear model because we don't have to use style: "item" for regular list items and style: "definition" for definition lists
* Enforces correct nesting through existing node rules systems
* Updates tests accordingly
Change-Id: I64d80af938e325f1961226505bdc386bb35ccdda