Got rid of "Note" attributes

We decided that “Note” attributes should be Annotations, but that many
entities may still need “Description” attributes.  So, I did the
following:

1. Where there was a “Note” field, but not a “Description” field I
changed the name from Note to Description.
2.  Where there were both fields in an entitity, I deleted the Note
field.
3.  I made sure that all “Description” fields were VARCHAR(500).