VegBank

TaxonCover doesn't appear in the plot-view. This is probably b/c it isn't being
written to the XML right. For example, see above url, which shows taxoncover as
"null" for all entries. Then see with psql:

vegbank=> select taxonObservation_ID, observation_ID, taxonCover from
taxonObservation where observation_ID=98;
taxonobservation_id | observation_id | taxoncover
---------------------+----------------+------------
959 | 98 | 0
960 | 98 | 0
961 | 98 | 0
962 | 98 | 15
963 | 98 | 15
964 | 98 | 15
965 | 98 | 0
966 | 98 | 15
967 | 98 | 0
(9 rows)