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).

inputs/FIA/TREE/run: documented import() runtime (1.5 h), which includes table cleanup runtime (1 h)

inputs/FIA/COND/postprocess.sql: filtering formula: documented that this was created by Brad, and provided the URL to it on nimoy

**/new_terms.csv, unmapped_terms.csv updated (using `make missing_mappings`)

copyright scrub: inputs/: removed data provider-owned schema and documentation files, which are not BIEN copyright and should not be part of what is submitted for open-sourcing. these files will remain accessible via the web interface (fs.vegpath.org), but will not be in the repository.

fix: bin/map: put template: comment out the "Put template:" label so that the output is valid XML, and displays properly in a browser rather than showing a syntax error

bugfix: mappings/VegCore-VegBIEN.csv: nest all taxonoccurrences inside a stratum event, so that the parent locationevent is always fully populated before child locationevents point to it. (previously, a stub parent event was created when the child event was imported first, which blocked the fully-populated parent event from being inserted later on.) this uses auto-folding (for VegBank/CVS) and auto-forwarding (for other datasources) to prune empty stratum events for taxonoccurrences that don't have strata. (see wiki.vegpath.org/Auto-folding, wiki.vegpath.org/Auto-forwarding for more info about these normalization techniques.) note that the inserted row counts stay exactly the same for all datasources except VegBank (which was being fixed), indicating that this signficant change to the mappings did not change the semantics of the import of taxonoccurrences.

inputs/FIA/occurrence_all/: renamed to taxon_observation.** to clarify what an occurrence is. taxon_observation has the same meaning as in VegCore, where each taxon_determination is considered a separate taxon_observation of the associated specimen or vouchered plant (vegpath.org/VegCore/ERD/). (note that having multiple taxon_determinations only makes sense when there is something to reobserve.) the .** is SQL dotpath syntax (wiki.vegpath.org/SQL_dotpaths) for the recursive expansion of all tables to which taxon_observation has forward fkeys (i.e. "the left-join").

inputs/FIA/occurrence_all/postprocess.sql: use :table_str var instead of hardcoding the table name as occurrence_all, to avoid needing to change this file when renaming the view

inputs/FIA/occurrence_all/postprocess.sql: renamed occurrence_all--row_num to just row_num because this is for the entire view, rather than a specific table in it, and thus does not need a disambiguating table prefix. this also avoids embedding the view name in its own columns.