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/observation_/header.csv, map.csv: updated for refresh, which inserts hasobservationsynonym at the end of the observation table

input.Makefile: Staging tables installation: `%/install: %/create.sql`: Don't add a row number column to the created table because it is now added automatically to the temp table by column-based import (row-based import now also does not require a pkey for DB inputs)

inputs/VegBank/: Added observation_/