fix: mappings/VegCore-VegBIEN.csv: taxonoccurrence.sourceaccessioncode: need to populate from aggregateOrganismObservationID when only that is available

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/CVS/: don't import joined tables, because they are now imported in the taxon_observation.** left-join instead

inputs/CVS/: added taxon_observation.** left-join of the tables, using the steps at http://wiki.vegpath.org/Left-joining_a_datasource. this involves renaming taxonOccurrenceID->taxonOccurrenceID__overall_plot so that it can then be joined together with aggregateOrganismObservationID to create the full taxonOccurrenceID (as in VegBank).

inputs/CVS/stemCount_/map.csv: remapped stratum_ID->*STRATUM_ID so it would match up with stratum.*STRATUM_ID

inputs/CVS/: prepended the table name to each column name to prevent column collisions, using the steps at http://wiki.vegpath.org/Left-joining_a_datasource

inputs/CVS/: switched to new-style import, using the steps at http://wiki.vegpath.org/Adding_new-style_import_to_a_datasource

inputs/CVS/stemCount_/: translated filters to postprocessing derived columns, using the steps at http://wiki.vegpath.org/Adding_new-style_import_to_a_datasource#1-Translate-filters-to-postprocessing-derived-columns. note that the inserted row count changes, because there is now a primary key (which the table is auto-sorted by) where previously there was none.

bugfix: inputs/CVS/stemCount_/map.csv: ensure the aggregateoccurrence.sourceaccessioncode is always populated, because this is a required field when using sourceaccessioncodes. without it, the import will exclude rows which lack a value in this field because it cannot deduplicate on it for these rows, leading to the dropping of large numbers of occurrences. this shows up when comparing provider_count to the input table's row count, and produces the following error in the .errors table:...

bugfix: mappings/VegCore-VegBIEN.csv: main taxondetermination: use [!isoriginal=true] instead of [!isoriginal] so that adding a manual isoriginal field does not prevent this selector from matching