update 'phonetic' field according to new shorten

[mfrasca]

I've updated the 'shorten' function in cuchubo.js, so we have the same definition in both g.web and g.pocket. We should also update the 'phonetic' field in the database, or we won't be able to find our plants.

[mfrasca]

just run this:

conn = new Mongo();
db = conn.getDB("gardens");

var c = db.taxa.find();
while (c.hasNext()) {
  object = c.next(); 
  phonetic = shorten(object.name);
  db.taxa.update({_id: object._id}, {$set: {'phonetic': phonetic}});
}