Updated rvmrc and Gemfile to allow for non-Oracle development
[#36640971] Don't leak connections to the DB

Heavily refactored application to prevent connections being leaked and
to improve the general format of the code.  Eventually this will be
refactored with the plate_barcode application in order to run both of
them together.
Merge pull request #1 from mattdenner/36640971_user_barcode_process_doesn_t_release_connections

36640971 user barcode process doesn t release connections
[#42198561] Upgrade to ActiveRecord 2.3.15
Merge pull request #2 from mattdenner/42198561_rails_vulnerabilities

[#42198561] Upgrade to ActiveRecord 2.3.15
Merge pull request #3 from sanger/production

Production