add sidekiq configuration file
Merge pull request #53 from unepwcmc/increase-sidekiq-parallelism

add sidekiq configuration file
PA Slugs include designation as well

This is because some PAs have the same name, varying only by
designation, which causes obvious issues for our slug URLs :)

Also moves the slug generation to a model method. I think it's better
placed here, and allows us access to all available PA attributes rather
than futzing around in the DataStandard class and sharing data.
Merge pull request #54 from unepwcmc/slug-with-designation

PA Slugs include designation as well
Documentation for rails caching
Merge pull request #55 from unepwcmc/caching-docs

Documentation for rails caching
search works on subterms
cartocss on the fly for protected area page
addWdpaTiles only if data-wdpa-id?
add search_lexemes table
camelcase convention for variable name
add Search::Similarity class
align db_structure.sql
add search_for_similar to Search
make SearchController use new Search structure
better formatting for cartocss
Merge pull request #58 from unepwcmc/cartodb

Cartodb
use new search in search page
simplify HTML structure and use strong, not bold
Support for handling legacy PP protected area URLs

The Protected Areas URLs in the previous version were in the format
`/sites/<slug>`. This commit introduces the same route, and a table that
matches the old legacy slugs with WDPA IDs.