bugfix: /Makefile: postgres-Linux: fixed command to create /etc/apt/sources.list.d/pgdg.list

schemas/*.conf: upgraded to PostgreSQL 9.3, which is needed for proper exception parsing in the auto-re-create-views functionality

/Makefile: postgres-Linux: also install postgresql-#-postgis-scripts, which is used by derived/biengeo/

bugfix: schemas/vegbien.sql: plantobservation_aggregateoccurrence_count_1(): only default aggregateoccurrence.count to 1 for specimens data, because plots data may have any number of individuals in a taxon_presence record that has no explicit individual_count

schemas/*.sql: updated for PostgreSQL 9.3. this reorders some functions, adds empty comment headers for omitted SEQUENCE SET commands, and (best of all) finally splits view columns onto multiple lines, so that changes in the columns are actually legible (and produce their own svn diff!)

planning/timeline/timeline.2013.xls: added tasks "create high-level workflow diagram" and "load BIEN2 exports directly from raw data", as requested by Martha

bugfix: lib/Firefox_bookmarks.reformat.csv: remove empty <DD> tags (which Firefox now adds for all bookmarks) so they don't create a blank space on the page

bugfix: lib/Firefox_bookmarks.reformat.csv: don't prepend "page's description:" to empty <DD> tags, which Firefox now adds for all bookmarks, even if they don't have a description

web/links/index.htm: updated to Firefox bookmarks. added instructions for upgrading PostgreSQL to 9.3, and some GBIF links.

Makefile, schemas/.Mac.conf: upgraded to PostgreSQL 9.3, which is needed for proper exception parsing in the auto-re-create-views functionality. this also removes the Mac 10.8 Mountain Lion quirks, such as renaming the postgres user to _postgres (which messed everything up, but is now back to normal).