Added initial support for extracting map preview images from game level mixes that include a screenshot or overhead map

lib/worker/api/settings.rb

@@ -35,7 +35,10 @@ module W3DHubLauncher
         end
 
         def application_installed?(application, channel)
-          applications.find { |app| app.id == application&.id && app.channel == channel&.id }
+          app_id = application.is_a?(String) ? application : application.id
+          channel_id = channel.is_a?(String) ? channel : channel.id
+
+          applications.find { |app| app.id == app_id && app.channel == channel_id }
         end
 
         # User explictly set options