use chosen-rails

Gemfile

@@ -34,6 +34,7 @@ gem "colored"
 gem 'yaml_db', :git => "https://github.com/gitlabhq/yaml_db.git"
 gem 'modularity'
 gem 'resque_mailer'
+gem 'chosen-rails'
 
 group :assets do
   gem "sass-rails",   "3.2.3"

Gemfile.lock

@@ -105,6 +105,9 @@ GEM
     charlock_holmes (0.6.8)
     childprocess (0.3.2)
       ffi (~> 1.0.6)
+    chosen-rails (0.9.8)
+      railties (~> 3.0)
+      thor (~> 0.14)
     coderay (1.0.6)
     coffee-rails (3.2.2)
       coffee-script (>= 2.2.0)
@@ -330,6 +333,7 @@ DEPENDENCIES
   capybara
   carrierwave
   charlock_holmes
+  chosen-rails
   coffee-rails (= 3.2.2)
   colored
   database_cleaner

app/assets/javascripts/application.js

@@ -14,7 +14,7 @@
 //= require jquery.highlight
 //= require bootstrap-modal
 //= require modernizr
-//= require chosen
+//= require chosen-jquery
 //= require raphael
 //= require branch-graph
 //= require_tree .
@@ -75,7 +75,7 @@ function slugify(text) {
   return text.replace(/[^-a-zA-Z0-9]+/g, '_').toLowerCase();
 }
 
-function showDiff(link) { 
+function showDiff(link) {
   $(link).next('table').show();
   $(link).remove();
 }