Work on better Clade-Language linking
Work on better Clade-Language linking

- I've added ielex/languageCladeLogic.py which has code to perform the linking
  in a manner that should be both faster and more reliable than the current approach.
  I'll need to integrate and test this next.
- Relates to #193

lingdb/CoBL-public,lingdb/CoBL-public,lingdb/CoBL-public,lingdb/CoBL-public