ensure VegBank documents plot type in the sense of 'classification' plots vs. 'occurrence' plots.
Akin to CVS Plot Levels. May be catured in PlotValidationLevel, but I'm not sure. If we need to add a field, this will have broader implications, including VegBranch. There is a separate issue about typal plots here that is confusing. A plot is NEVER typal or not, it's the classification of the plot that is typal for a particular community.
Source is section 2.6.3 number 15 of requirements document, page 66