Add tracking of OAuth app that posted a status, extend OAuth apps to have optional website field, add application details to API, show application name and website on detailed status views. Resolves #11

db/migrate/20170114194937_add_application_to_statuses.rb

@@ -0,0 +1,5 @@
+class AddApplicationToStatuses < ActiveRecord::Migration[5.0]
+  def change
+    add_column :statuses, :application_id, :int
+  end
+end