Merge pull request #32 from GovWizely/calum/deletes-old-docs-take-2

Calum/deletes old docs take 2
Fully qualified class names throughout CSL.
Merge pull request #35 from GovWizely/calum/fully-qualified-class-names-throughout-csl

Fully qualified class names throughout CSL.
Add Access-Control-Allow-Origin header in dev.
initial commit of cleaned up ctr branch
incremental checkin with improved specs and numerous changes.
Fixed deleted leading zeros bug for hs_6 and tariff_line entries. renamed the tariff rates recreate and import rake task.
Added data files for 3 additional countries
Added explicit superclass naming. [#80370058]
added support for costa rica, el salvador, and korea tariff rates data.
`rubocop -a` against recent changes.
added back leading zero in TL field.
Added initial specs for korea tariff rates. Fixed missing 'controller' in controller file names.
removed consolidated_search_behavior. looking for explanation of diff between successful bundle exec rake locally and failed on travis.
Initial specs for costa rica tariff rates.
Initial specs for el salvador tariff rates.
Updated specs for au.
Modified wording to avoid conflict with csl spec helper.
Fix to countries query
Expanded sources queries.