fix: inputs/SALVIAS/salvias_plots.~.clean_up.sql: Remove private data that should not be publicly visible: also need to remove metadata-only plots

fix: inputs/SALVIAS/salvias_plots.~.clean_up.sql: Delete rows that do not satisfy foreign key constraints: also need to do this for plotObservations, since the refreshed data contains dangling rows for that as well

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).

Refreshed SALVIAS

inputs/SALVIAS/: Updated to new salvias_plots export on nimoy, which has a different schema

inputs/SALVIAS/salvias_plots.~.clean_up.sql: Moved Ensure globally unique column names to end to match VegBank order

inputs/SALVIAS/salvias_plots.~.clean_up.sql: Remove private data that should not be publicly visible, indicated by plotMetadata.AccessCode = 1

inputs/SALVIAS/salvias_plots.~.clean_up.sql: Enable cascading deletes by adding the necessary fkeys

inputs/SALVIAS/salvias_plots.~.clean_up.sql: Rename lookup_MethodCode.Description to lookup_MethodCode_Description to make it globally unique when joined with plotMetadata