BAtlas ID update: add map 55, more fixes

http://atlantides.org/batlas

Readme:

  • Eliminated duplication/collision problems with alias id values. Although the combination of label + map number + grid square is almost perfectly unique across the entire atlas, the same cannot be said for features not appearing on the maps (like "unlocated" and "false" toponyms), nor for alternative aliases, such as those created for individual constituent names in a multi-name label. Where possible, these collisions are eliminated by adding a one-up numbering scheme (postfixed) on the id, or by omitting non-primary alias alternatives where necessary. The one-up postfix numbers are also reflected in matching captions (in parentheses).
  • Corrected initial two-capitals error in geographic names and associated captions generated when a parenthetical variant indication leads the toponym (e.g., (L)Ibida, which should produce the variants "Libida" and "Ibida", not "LIbida" and "Ibida".
  • Captions for "group" features now read like "aqueduct group" instead of "aqueduct-group".
  • Suppress serialization of a few redundant captions