Adds rubocop as a dev dep.
`rubocop -a`ed the entire codebase.

With this in place, we can `rubocop -a` our PRs without having to deal
with the changes done to unrelated work.
Break process_sdn_node into several methods.
Merge remote-tracking branch 'origin/calum/rubocop-dash-a'
First commit

Rough code, just getting the data in ES
Load faqs from local file
Added search filter for dates

Loading faqs from URL again
Pause timer for import, search by answer
Fixed tab spacing
Topic, industry, country fields + queries
Specs first commit
Revised specs
Importer spec passes
Minor revisions
Climate revisions
Close controller class definition.
Revisions
Test and prod. using the same code path in importer.
Integrated specs with existing import logic
Cleanup answer field