Word Export LT-21830: Fix indentation issues (#147)

Many of the code changes were a result of Word not allowing
nested paragraphs.  As a result, all paragraphs need to be moved
to first level elements in the Body.
- Add paragraphs instead of starting a new line.
- Nested content like sub-senses still result in a new
  paragraph.
- Removed condition from GenerateWordStyleFromLcmStyleSheet()
  that was preventing nodes under senses from indenting
  correctly (examples).
- The basedOn value can now come from either the styles basedOn
  value or from the parent node.