Add pghero for analyzing postgres performance in production

Gemfile

@@ -12,6 +12,7 @@ gem 'puma'
 
 gem 'hamlit-rails'
 gem 'pg'
+gem 'pghero'
 gem 'dotenv-rails'
 gem 'font-awesome-rails'
 

Gemfile.lock

@@ -197,6 +197,8 @@ GEM
     parser (2.3.1.2)
       ast (~> 2.2)
     pg (0.18.4)
+    pghero (1.6.2)
+      activerecord
     powerpack (0.1.1)
     pry (0.10.4)
       coderay (~> 1.1.0)
@@ -403,6 +405,7 @@ DEPENDENCIES
   paperclip (~> 4.3)
   paperclip-av-transcoder
   pg
+  pghero
   pry-rails
   puma
   rabl

config/routes.rb

@@ -5,6 +5,7 @@ Rails.application.routes.draw do
 
   authenticate :user, lambda { |u| u.admin? } do
     mount Sidekiq::Web => '/sidekiq'
+    mount PgHero::Engine, at: 'pghero'
   end
 
   use_doorkeeper do