Shapefile download generator returns immediately if no WDPA IDs are
given
Download generator no longer attempts to upload to S3 if now download is
generated (due to no WDPA IDs given)
Update cartodb layer for july
Merge branch 'master' into fix-download-generator

* master:
  add "Handle misspellings" section in search docs
  Legacy PA urls match all PA sub-pages
  Add missing structure dump
  Documentation for legacy PP handling
  Support for handling legacy PP protected area URLs
  simplify HTML structure and use strong, not bold
  use new search in search page
  better formatting for cartocss
  make SearchController use new Search structure
  add search_for_similar to Search
  align db_structure.sql
  add Search::Similarity class
  camelcase convention for variable name
  add search_lexemes table
  addWdpaTiles only if data-wdpa-id?
  cartocss on the fly for protected area page
  search works on subterms
  Documentation for rails caching
  PA Slugs include designation as well
  add sidekiq configuration file

Conflicts:
	app/assets/javascripts/protected_area_map.js.coffee
Merge pull request #51 from unepwcmc/fix-download-generator

Fix download generator