Fix "No status found with that ID." when fetching from twitter

app/logical/sources/strategies/twitter.rb

@@ -13,7 +13,8 @@ module Sources::Strategies
     end
 
     def get
-      attrs = TwitterService.new.client.status(url).attrs
+      status_id = status_id_from_url(url)
+      attrs = TwitterService.new.client.status(status_id).attrs
       @artist_name = attrs[:user][:name]
       @profile_url = "https://twitter.com/" + attrs[:user][:screen_name]
       @image_url = attrs[:entities][:media][0][:media_url] + ":orig"
@@ -22,5 +23,13 @@ module Sources::Strategies
     def image_urls
       TwitterService.new.image_urls(url)
     end
+
+    def status_id_from_url(url)
+      if url =~ %r{^https?://twitter\.com/[^/]+/status/(\d+)}
+        $1
+      else
+        raise Sources::Error.new("Couldn't get status ID from URL: #{url}")
+      end
+    end
   end
 end