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
Merge pull request #197 from PurityControl/osra-num-db-constraints

added unique constraints to all osra_num fields at the db level
partner#index, partner#show moved to rails
partner#edit, partner#create moved
green partner.feature
sorting
ruby extension
added osra239
show view spec
all view specs
model specs updated
partners controller specs
view layout specs
shortened long lines wherever possible
user authentication
sign-in added to spec
use cycle instead of parity