Cleanup question field, topic & industry filters.
Update topic and industry filters, specs.
Filter multiple industries and topics.
Merge pull request #40 from GovWizely/tim/parature-faqs

Tim/parature faqs
Update Source field in CSL endpoint.

[#81870294]
change null -> nil, only store (alt) annual rates with values, convert those values from array to hash. [81829700]
convert "nil" string to nil object.
Merge pull request #41 from GovWizely/james/tariff-rate-tweaks

Tariff Rate Tweaks [81829700]
Rubocop says: strings without interp. should be

single quoted.
Updated topics & industries queries.
Merge pull request #43 from GovWizely/tim/parature-faqs

Updated topics & industries queries.
First commit, import locally.
Started mappings and queries.
Updated mappings, nested queries.
Updated indexing, mapping, and queries.
Added geo_regions and topics fields and queries.
Refactored import methods.
Refactored query methods, import spec.
Added specs.
Uncommented import statement.