intermediate commit for organizations fixtures
Organization factories replaced by fixtures
removed unnecessary comment
Comments from Nik included
Replace Unicorn with Passenger
Merge pull request #194 from NikitaAvvakumov/replace_unicorn_with_passenger

Replace Unicorn with Passenger
Merge pull request #185 from robbiejackson/organizations-fixture-osra-267

Organizations fixture osra 267
Branches factory replaced by fixtures
Merge pull request #192 from robbiejackson/branches-fixture-osra-268
fix duplicate osra_num on import
updated tests
ensure fix is applied
update sequencer
code review: remove test
Merge pull request #196 from theB264/osra273_orphan_osra_num

OSRA273 fix duplicate osra_num on import
added unique constraints to all osra_num fields at the db level

- any unanticipated duplicates of osra_num by the software will make the db
  reject input and the app to fail ungracefully