employer and broker have many plan years
elected plan is now embedded in plan_year
plan now has a year
Employer Create/update use cases to support seed/import
vocal upload plan lookup using year
elected plan looks up plan record using year
employer request for create/update employer use cases
EDI import code finds plans by year when appropriate
plan premium importing finds plans by year
employer request finds plan by bios and year
EDI import cache now stores plans by year.
employer show view to accommodate plan years
change effective date gets shop rate period dates from plan year
Adding amqp services.
Revert "Adding amqp services."

This reverts commit 509ed5fe99821641e20433c66ca31e3f521d3626.
2015 plans seed
turn off hbx_plan_id uniqueness as we currently have none for 2015
update 2015 premium seeds
Merge branch 'yearly_plans'
correct employer view error