Add plugin for displaying sidekiq statistic in web ui

Gemfile

@@ -90,6 +90,7 @@ gem 'rinku'
 gem 'sanitize'
 gem 'sass'
 gem 'sidekiq'
+gem 'sidekiq-statistic'
 
 # for sidekiq web
 gem 'sinatra', require: false

Gemfile.lock

@@ -333,6 +333,8 @@ GEM
       json (~> 1.0)
       redis (~> 3.2, >= 3.2.1)
       redis-namespace (~> 1.5, >= 1.5.2)
+    sidekiq-statistic (1.1.0)
+      sidekiq (~> 3.3, >= 3.3.4)
     simple-rss (1.3.1)
     simplecov (0.9.1)
       docile (~> 1.1.0)
@@ -474,6 +476,7 @@ DEPENDENCIES
   seed-fu (~> 2.3.3)
   shoulda
   sidekiq
+  sidekiq-statistic
   simple-rss
   simplecov
   sinatra