schemas/VegBIEN/: moved Redmine/, TWiki/ to web/BIEN3/ since they relate to the BIEN3 project as a whole, not just the database
merged inputs/VegBIEN into schemas/VegBIEN, since for the purposes of the data dictionary URLs, VegBIEN is primarily an exchange schema
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).
web/.twiki/data/Main/TWikiPreferences.txt: updated with current settings
put web/.twiki/data/Main/TWikiPreferences.txt under version control. note that this file (Main/TWikiPreferences.txt) is the correct file to change the settings in, not TWiki/TWikiPreferences.txt.