FEATURE: add clean support for running Discourse in a subfolder

To setup set DISCOURSE_RELATIVE_URL_ROOT to the folder you wish

app/controllers/forums_controller.rb

@@ -17,7 +17,7 @@ class ForumsController < ApplicationController
   end
 
   def home_redirect
-    redirect_to '/'
+    redirect_to path('/')
   end
 
 end