Fix crash on /fetch/search/:subscription_type/:query/?:query_type? route when  called without the per_page param. A nil per_page local variable must be supported by the items.erb template because the controller at search.rb:37 explicitly requests it. (Other controllers render this template but leave per_page undefined.)
Merge pull request #469 from andrewjanssen/crash-on-fetch-without-per-page

Fix crash on /fetch/search/... route