NEMO-1838 WIP - comment out connection_pool overrides
NEMO-1838 Ruby 2.1.1 and remove gemset
NEMO-1838 Fix setting current_database_name which seems to be used by rspec a lot.
NEMO-1838 Cleaned up nested conditional
NEMO-1838 Restore logic to reuse connection pools.

(Modified for ActiveRecord 4.)
NEMO-1838 Thread safety.
Merge pull request #1 from godaddy/1838

1838 - Rails 4 and Spree 2.2