Revert "Revert message bus upgrade"

This reverts commit 47e718f5b24cb2d8b991f5b1a51efe3f79f5f934.

config/initializers/050-force_https.rb

@@ -0,0 +1,14 @@
+# tiny middleware to force https if needed
+class Discourse::ForceHttpsMiddleware
+
+  def initialize(app, config={})
+    @app = app
+  end
+
+  def call(env)
+    env['rack.url_scheme'] = 'https' if SiteSetting.use_https
+    @app.call(env)
+  end
+
+end
+