Keep the extension work in one common place

This is the very first Railtie initializer.

lib/web_console/extensions.rb

@@ -21,7 +21,7 @@ def console(binding = Bindex.current_bindings.second)
 end
 
 module WebConsole
-  module DebugExceptions
+  module DebugExceptionsExt
     def render_exception(request, exception)
       super(request, exception).tap do
         backtrace_cleaner = request.get_header('action_dispatch.backtrace_cleaner')
@@ -40,3 +40,5 @@ def render_exception(request, exception)
     end
   end
 end
+
+ActionDispatch::DebugExceptions.prepend(WebConsole::DebugExceptionsExt)

lib/web_console/railtie.rb

@@ -40,6 +40,7 @@ class Railtie < ::Rails::Railtie
       if mount_point = config.web_console.mount_point
         Middleware.mount_point = mount_point.chomp('/')
       end
+
       if root = Rails.application.config.relative_url_root
         Middleware.mount_point = File.join(root, Middleware.mount_point)
       end
@@ -66,11 +67,5 @@ class Railtie < ::Rails::Railtie
     initializer 'i18n.load_path' do
       config.i18n.load_path.concat(Dir[File.expand_path('../locales/*.yml', __FILE__)])
     end
-
-    initializer 'web_console.patch_debug_exception_middleware' do |app|
-      app.config.after_initialize do
-        ActionDispatch::DebugExceptions.prepend DebugExceptions
-      end
-    end
   end
 end