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/20170114203041_add_website_to_oauth_application.rb

@@ -0,0 +1,5 @@
+class AddWebsiteToOauthApplication < ActiveRecord::Migration[5.0]
+  def change
+    add_column :oauth_applications, :website, :string
+  end
+end