Reenable asset compilation for production

Gemfile.lock

@@ -60,6 +60,13 @@ GEM
       capistrano (< 3.0)
     chronic (0.10.2)
     coderay (1.1.0)
+    coffee-rails (4.0.1)
+      coffee-script (>= 2.2.0)
+      railties (>= 4.0.0, < 5.0)
+    coffee-script (2.2.0)
+      coffee-script-source
+      execjs
+    coffee-script-source (1.7.0)
     crack (0.4.2)
       safe_yaml (~> 1.0.0)
     daemons (1.1.9)
@@ -229,6 +236,7 @@ DEPENDENCIES
   aws-s3!
   bcrypt-ruby
   capistrano-unicorn
+  coffee-rails
   daemons
   dalli
   delayed_job
@@ -255,6 +263,7 @@ DEPENDENCIES
   shoulda
   simple_form
   simplecov
+  sprockets-rails
   sql-logging
   statistics2
   term-ansicolor