Add link to github project to footer, move FanOutOnWriteService calls to

DistributionWorker. That isn't the heaviest service, yet, but gotta start
somewhere

app/workers/distribution_worker.rb

@@ -0,0 +1,7 @@
+class DistributionWorker
+  include Sidekiq::Worker
+
+  def perform(status_id)
+    FanOutOnWriteService.new.(Status.find(status_id))
+  end
+end