Switched to the metadata-driven display transformation.

--HG--
rename : viewer/src/main/scala/org/podval/judaica/viewer/HebrewNumbers.scala => viewer/src/main/scala/org/podval/judaica/structure/HebrewNumbers.scala
rename : viewer/src/main/scala/org/podval/judaica/viewer/TanachStructure.scala => viewer/src/main/scala/org/podval/judaica/structure/TanachStructure.scala