workd on postgres compatability, resolved issues 231 and 232
resolved issue 233, fixed session write handler for postgres backend.  Modified all database query functions to rethrow errors so that they can be used with transactions with rollback on error
missed a comma, already pushed so can't do --amend
missed a $, already pushed so can't do --amend
resolved issue 235 - fixed fof_db_get_items on postgres backend, changed limit a,b to limit b OFFSET a
worked on issue 237 - fix fetching of starred items on postgres backend.  Will need to check that this approach works with mysql
added debug instrument
more debug instruments
resolved issue 237, starring should now work with pgsql
resolved issue 239 - disappearing star issue
resolved issue 240 - can now delete tags from sidebar with postgres backend
Merge branch 'pgsql_compat2'