moved everything into /trunk/ to create the standard svn layout, for use with tools that require this (eg. git-svn). IMPORTANT: do NOT do an `svn up`. instead, re-use your working copy's existing files with `svn switch` (http://svnbook.red-bean.com/en/1.6/svn.ref.svn.c.switch.html).

bugfix: inputs/VegBank/: need to remove inter-datasource duplicates from plot instead of the left-joined plot_ table, because the fkeys needed to do the cascading deletes are all to the plot table. this requires doing the column-renaming and postprocessing on plot before it's left-joined.