Adds autocomplete data lists for keyword and location search

This commit provides data lists for keyword and location search inputs.
The keywords are a hardcoded list of keywords from the CIP data and the
locations are a hardcoded list of the incorporated and unincorporated
cities of San Mateo County, CA.
Adds service terms to no results list plus styling

Adds service terms boxes to no results page. Currently they aren't
clickable, but that's coming.
Removes old no results styles

No results style used to show "No Results" text. This has been removed
so the associated styles are no longer necessary.
Adds styles to no results service terms
Updates no results styles and adds links

Sets the no results service terms to be links and adds additional
styles.
Fixes invalid search test error

Invalid search test was failing because the search didn't include a
path and the orgs variable was being checked for being nil, not empty,
as it should have been. This was causing an error because the service
categories were actually not showing up on the 'no results' search
results page as they should.
Adds service hints method to no results search test

When page has no results, this tests for the existence of service
category term hints on the 'no results' page.
Adds nil? check for location searches

For location searches, the orgs property is nil, so this adds a check
for that in the organization controller.
Merges `master`
Added 'CA' to end of cities datalist

Locations datalist didn't include state. This commit hardcodes state
abbreviation.
Refactors code
Merge pull request #206 from codeforamerica/keyword-prompts

Keyword prompts