bugfix: lib/sh/util.sh: sudo(): when don't need sudo: do need `command` to have effects of invoking external command

fix: lib/sh/db.sh: pg_snapshot(): first need to run pg_stop_backup() in case a backup was not stopped cleanly

fix: lib/sh/db.sh: pg_stop_backup(): ignore benign "a backup is not in progress" error

lib/sh/util.sh: sudo(): only run sudo if needed

lib/sh/util.sh: sudo(): factored PATH-preserving code out into separate wrapper var that can also be used separately, eg. with `sudo -u`

lib/sh/util.sh: sudo(): moved addition of -E (which should always happen) to separate, overridden sudo() function

lib/sh/util.sh: moved -E to is_callable section because it just applies to that

fix: inputs/input.Makefile: $(svnFilesGlob): only svn:ignore *.log in the top-level dir

added inputs/XAL/Specimen/data.csv (empty template)

fix: inputs/input.Makefile: add!: verify/: also svn:ignore .zip

fix: inputs/input.Makefile: add!: verify/: also svn:ignore .zip

lib/sh/util.sh: added become_sudo alias

lib/sh/util.sh: added $is_root

inputs/publishable datasources.xlsx: updated: replaced BIEN2 traits with Cyrille traits

exports/view_full_occurrence_CVS.csv.run: documented runtime (2 min for 5000 rows)

fix: inputs/publishable datasources.xlsx: updated: conditions of use: Canadensys sources: these should actually be marked as no restrictions, in contrast to Brian E's earlier annotations, because they are public domain: the citation is requested, but not legally required

inputs/publishable datasources.xlsx: updated

inputs/publishable datasources.xlsx: updated: conditions of use: indicated which datasources have no restrictions

web/BIEN3/Redmine/issues/.htaccess: dest: decoded chars that don't need to be escaped, for clarity

bugfix: web/BIEN3/Redmine/issues/.htaccess: need to store dest in separate var because % is treated specially in the replacement str

inputs/CVS/^taxon_observation.**.sample/test.xml.ref: updated

fix: inputs/CVS/plantConcept_/header.csv: regenerated after fixing the postprocess/cleanup ordering bug (r14827), which had caused header.csv to be incorrectly generated after renames in postprocess.sql were applied

web/BIEN3/Redmine/issues/.htaccess: main page: sort by priority

planning/meetings/BIEN conference call availability.xlsx: updated

planning/meetings/BIEN conference call availability.xlsx: updated