diff --git a/Gemfile.lock b/Gemfile.lock
index 35484c3..73fd1f6 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -15,7 +15,7 @@ PATH
       kramdown (> 1.0.0)
       kramdown-haml
       puma
-      rails (~> 4.1.7)
+      rails (~> 4.2.0)
       rubyzip (~> 1.1)
       sass-rails (~> 4.0.3)
       settingslogic
@@ -25,34 +25,43 @@ PATH
 GEM
   remote: https://rubygems.org/
   specs:
-    actionmailer (4.1.9)
-      actionpack (= 4.1.9)
-      actionview (= 4.1.9)
+    actionmailer (4.2.1)
+      actionpack (= 4.2.1)
+      actionview (= 4.2.1)
+      activejob (= 4.2.1)
       mail (~> 2.5, >= 2.5.4)
-    actionpack (4.1.9)
-      actionview (= 4.1.9)
-      activesupport (= 4.1.9)
-      rack (~> 1.5.2)
+      rails-dom-testing (~> 1.0, >= 1.0.5)
+    actionpack (4.2.1)
+      actionview (= 4.2.1)
+      activesupport (= 4.2.1)
+      rack (~> 1.6)
       rack-test (~> 0.6.2)
-    actionview (4.1.9)
-      activesupport (= 4.1.9)
+      rails-dom-testing (~> 1.0, >= 1.0.5)
+      rails-html-sanitizer (~> 1.0, >= 1.0.1)
+    actionview (4.2.1)
+      activesupport (= 4.2.1)
       builder (~> 3.1)
       erubis (~> 2.7.0)
-    activemodel (4.1.9)
-      activesupport (= 4.1.9)
+      rails-dom-testing (~> 1.0, >= 1.0.5)
+      rails-html-sanitizer (~> 1.0, >= 1.0.1)
+    activejob (4.2.1)
+      activesupport (= 4.2.1)
+      globalid (>= 0.3.0)
+    activemodel (4.2.1)
+      activesupport (= 4.2.1)
       builder (~> 3.1)
-    activerecord (4.1.9)
-      activemodel (= 4.1.9)
-      activesupport (= 4.1.9)
-      arel (~> 5.0.0)
-    activesupport (4.1.9)
-      i18n (~> 0.6, >= 0.6.9)
+    activerecord (4.2.1)
+      activemodel (= 4.2.1)
+      activesupport (= 4.2.1)
+      arel (~> 6.0)
+    activesupport (4.2.1)
+      i18n (~> 0.7)
       json (~> 1.7, >= 1.7.7)
       minitest (~> 5.1)
-      thread_safe (~> 0.1)
+      thread_safe (~> 0.3, >= 0.3.4)
       tzinfo (~> 1.1)
-    addressable (2.3.6)
-    arel (5.0.1.20140414130214)
+    addressable (2.3.8)
+    arel (6.0.0)
     builder (3.2.2)
     capybara (2.4.4)
       mime-types (>= 1.16)
@@ -60,15 +69,13 @@ GEM
       rack (>= 1.0.0)
       rack-test (>= 0.5.4)
       xpath (~> 2.0)
-    capybara-screenshot (1.0.4)
+    capybara-screenshot (1.0.7)
       capybara (>= 1.0, < 3)
-      colored
       launchy
     celluloid (0.15.2)
       timers (~> 1.1.0)
     cliver (0.3.2)
     coderay (1.1.0)
-    colored (1.2)
     cool.io (1.3.0)
     crack (0.4.2)
       safe_yaml (~> 1.0.0)
@@ -99,6 +106,8 @@ GEM
       yajl-ruby (~> 1.0)
     font-awesome-rails (4.3.0.0)
       railties (>= 3.2, < 5.0)
+    globalid (0.3.3)
+      activesupport (>= 4.1.0)
     haml (4.0.6)
       tilt
     haml-rails (0.5.3)
@@ -127,6 +136,8 @@ GEM
       haml
     launchy (2.4.3)
       addressable (~> 2.3)
+    loofah (2.0.1)
+      nokogiri (>= 1.5.9)
     mail (2.6.3)
       mime-types (>= 1.16, < 3)
     mechanize (2.7.3)
@@ -143,13 +154,13 @@ GEM
     mini_portile (0.6.2)
     minitest (5.5.1)
     msgpack (0.5.11)
-    multi_json (1.10.1)
+    multi_json (1.11.0)
     net-http-digest_auth (1.4)
     net-http-persistent (2.9.4)
     nokogiri (1.6.6.2)
       mini_portile (~> 0.6.0)
     ntlm-http (0.1.1)
-    poltergeist (1.5.1)
+    poltergeist (1.6.0)
       capybara (~> 2.1)
       cliver (~> 0.3.1)
       multi_json (~> 1.0)
@@ -158,26 +169,35 @@ GEM
       coderay (~> 1.1.0)
       method_source (~> 0.8.1)
       slop (~> 3.4)
-    pry-rails (0.3.2)
+    pry-rails (0.3.4)
       pry (>= 0.9.10)
     puma (2.11.1)
       rack (>= 1.1, < 2.0)
-    rack (1.5.2)
+    rack (1.6.0)
     rack-test (0.6.3)
       rack (>= 1.0)
-    rails (4.1.9)
-      actionmailer (= 4.1.9)
-      actionpack (= 4.1.9)
-      actionview (= 4.1.9)
-      activemodel (= 4.1.9)
-      activerecord (= 4.1.9)
-      activesupport (= 4.1.9)
+    rails (4.2.1)
+      actionmailer (= 4.2.1)
+      actionpack (= 4.2.1)
+      actionview (= 4.2.1)
+      activejob (= 4.2.1)
+      activemodel (= 4.2.1)
+      activerecord (= 4.2.1)
+      activesupport (= 4.2.1)
       bundler (>= 1.3.0, < 2.0)
-      railties (= 4.1.9)
-      sprockets-rails (~> 2.0)
-    railties (4.1.9)
-      actionpack (= 4.1.9)
-      activesupport (= 4.1.9)
+      railties (= 4.2.1)
+      sprockets-rails
+    rails-deprecated_sanitizer (1.0.3)
+      activesupport (>= 4.2.0.alpha)
+    rails-dom-testing (1.0.6)
+      activesupport (>= 4.2.0.beta, < 5.0)
+      nokogiri (~> 1.6.0)
+      rails-deprecated_sanitizer (>= 1.0.1)
+    rails-html-sanitizer (1.0.2)
+      loofah (~> 2.0)
+    railties (4.2.1)
+      actionpack (= 4.2.1)
+      activesupport (= 4.2.1)
       rake (>= 0.8.7)
       thor (>= 0.18.1, < 2.0)
     rake (10.4.2)
@@ -187,9 +207,9 @@ GEM
     rspec-expectations (3.2.0)
       diff-lcs (>= 1.2.0, < 2.0)
       rspec-support (~> 3.2.0)
-    rspec-its (1.0.1)
-      rspec-core (>= 2.99.0.beta1)
-      rspec-expectations (>= 2.99.0.beta1)
+    rspec-its (1.2.0)
+      rspec-core (>= 3.0.0)
+      rspec-expectations (>= 3.0.0)
     rspec-mocks (3.2.1)
       diff-lcs (>= 1.2.0, < 2.0)
       rspec-support (~> 3.2.0)
@@ -232,7 +252,7 @@ GEM
     thor (0.19.1)
     thread_safe (0.3.5)
     tilt (1.4.1)
-    timecop (0.7.1)
+    timecop (0.7.3)
     timers (1.1.0)
     tzinfo (1.2.2)
       thread_safe (~> 0.1)
@@ -245,9 +265,9 @@ GEM
       addressable (>= 2.3.6)
       crack (>= 0.3.2)
     webrobots (0.1.1)
-    websocket-driver (0.5.1)
+    websocket-driver (0.5.4)
       websocket-extensions (>= 0.1.0)
-    websocket-extensions (0.1.1)
+    websocket-extensions (0.1.2)
     xpath (2.0.0)
       nokogiri (~> 1.3)
     yajl-ruby (1.2.1)
diff --git a/app/controllers/api/settings_controller.rb b/app/controllers/api/settings_controller.rb
index a781a02..c519cac 100644
--- a/app/controllers/api/settings_controller.rb
+++ b/app/controllers/api/settings_controller.rb
@@ -4,9 +4,11 @@ class Api::SettingsController < ApplicationController
   before_action :set_config
   before_action :set_section, only: [:show, :update, :destroy]
   helper_method :element_id
-  respond_to :json
 
   def index
+    respond_to do |format|
+      format.json
+    end
   end
 
   def update
diff --git a/bin/rails b/bin/rails
index 7feb6a3..5191e69 100755
--- a/bin/rails
+++ b/bin/rails
@@ -1,8 +1,4 @@
 #!/usr/bin/env ruby
-begin
-  load File.expand_path("../spring", __FILE__)
-rescue LoadError
-end
-APP_PATH = File.expand_path('../../config/application',  __FILE__)
+APP_PATH = File.expand_path('../../config/application', __FILE__)
 require_relative '../config/boot'
 require 'rails/commands'
diff --git a/bin/rake b/bin/rake
index 8017a02..1724048 100755
--- a/bin/rake
+++ b/bin/rake
@@ -1,8 +1,4 @@
 #!/usr/bin/env ruby
-begin
-  load File.expand_path("../spring", __FILE__)
-rescue LoadError
-end
 require_relative '../config/boot'
 require 'rake'
 Rake.application.run
diff --git a/bin/setup b/bin/setup
new file mode 100755
index 0000000..acdb2c1
--- /dev/null
+++ b/bin/setup
@@ -0,0 +1,29 @@
+#!/usr/bin/env ruby
+require 'pathname'
+
+# path to your application root.
+APP_ROOT = Pathname.new File.expand_path('../../',  __FILE__)
+
+Dir.chdir APP_ROOT do
+  # This script is a starting point to setup your application.
+  # Add necessary setup steps to this file:
+
+  puts "== Installing dependencies =="
+  system "gem install bundler --conservative"
+  system "bundle check || bundle install"
+
+  # puts "\n== Copying sample files =="
+  # unless File.exist?("config/database.yml")
+  #   system "cp config/database.yml.sample config/database.yml"
+  # end
+
+  puts "\n== Preparing database =="
+  system "bin/rake db:setup"
+
+  puts "\n== Removing old logs and tempfiles =="
+  system "rm -f log/*"
+  system "rm -rf tmp/cache"
+
+  puts "\n== Restarting application server =="
+  system "touch tmp/restart.txt"
+end
diff --git a/config/boot.rb b/config/boot.rb
index 5e5f0c1..6b750f0 100644
--- a/config/boot.rb
+++ b/config/boot.rb
@@ -1,4 +1,3 @@
-# Set up gems listed in the Gemfile.
 ENV['BUNDLE_GEMFILE'] ||= File.expand_path('../../Gemfile', __FILE__)
 
-require 'bundler/setup' if File.exist?(ENV['BUNDLE_GEMFILE'])
+require 'bundler/setup' # Set up gems listed in the Gemfile.
diff --git a/config/environments/production.rb b/config/environments/production.rb
index 334d62d..639ca5c 100644
--- a/config/environments/production.rb
+++ b/config/environments/production.rb
@@ -16,13 +16,18 @@ Rails.application.configure do
 
   # Enable Rack::Cache to put a simple HTTP cache in front of your application
   # Add `rack-cache` to your Gemfile before enabling this.
-  # For large-scale production use, consider using a caching reverse proxy like nginx, varnish or squid.
+  # For large-scale production use, consider using a caching reverse proxy like
+  # NGINX, varnish or squid.
   # config.action_dispatch.rack_cache = true
 
+  # Disable serving static files from the `/public` folder by default since
+  # Apache or NGINX already handles this.
+  config.serve_static_files = true
+
 
   # Specifies the header that your server uses for sending files.
-  # config.action_dispatch.x_sendfile_header = "X-Sendfile" # for apache
-  # config.action_dispatch.x_sendfile_header = 'X-Accel-Redirect' # for nginx
+  # config.action_dispatch.x_sendfile_header = 'X-Sendfile' # for Apache
+  # config.action_dispatch.x_sendfile_header = 'X-Accel-Redirect' # for NGINX
 
   # Force all access to the app over SSL, use Strict-Transport-Security, and use secure cookies.
   # config.force_ssl = true
diff --git a/config/environments/test.rb b/config/environments/test.rb
index 24515b7..10db31f 100644
--- a/config/environments/test.rb
+++ b/config/environments/test.rb
@@ -12,8 +12,8 @@ Rails.application.configure do
   # preloads Rails for running tests, you may have to set it to true.
   config.eager_load = false
 
-  # Configure static asset server for tests with Cache-Control for performance.
-  config.serve_static_assets  = true
+  # Configure static file server for tests with Cache-Control for performance.
+  config.serve_static_files   = true
   config.static_cache_control = 'public, max-age=3600'
 
   # Show full error reports and disable caching.
@@ -32,6 +32,9 @@ Rails.application.configure do
   # ActionMailer::Base.deliveries array.
   config.action_mailer.delivery_method = :test
 
+  # Randomize the order test cases are executed.
+  config.active_support.test_order = :random
+
   # Print deprecation notices to the stderr.
   config.active_support.deprecation = :stderr
 
diff --git a/config/initializers/cookies_serializer.rb b/config/initializers/cookies_serializer.rb
index 7a06a89..7f70458 100644
--- a/config/initializers/cookies_serializer.rb
+++ b/config/initializers/cookies_serializer.rb
@@ -1,3 +1,3 @@
 # Be sure to restart your server when you modify this file.
 
-Rails.application.config.action_dispatch.cookies_serializer = :json
\ No newline at end of file
+Rails.application.config.action_dispatch.cookies_serializer = :json
diff --git a/config/initializers/session_store.rb b/config/initializers/session_store.rb
index 9bc70ea..e2270cd 100644
--- a/config/initializers/session_store.rb
+++ b/config/initializers/session_store.rb
@@ -1,3 +1,3 @@
 # Be sure to restart your server when you modify this file.
 
-Rails.application.config.session_store :cookie_store, key: '_fluentd-ui_session'
+Rails.application.config.session_store :cookie_store, key: '_fluentd_ui_session'
diff --git a/fluentd-ui.gemspec b/fluentd-ui.gemspec
index 2d225b7..f3bc22c 100644
--- a/fluentd-ui.gemspec
+++ b/fluentd-ui.gemspec
@@ -25,7 +25,7 @@ Gem::Specification.new do |spec|
   spec.require_paths = ["lib"]
 
   spec.add_dependency "fluentd", [">= 0.10.56", "< 2"]
-  spec.add_dependency 'rails', '~> 4.1.7'
+  spec.add_dependency 'rails', '~> 4.2.0'
   spec.add_dependency 'sucker_punch', "~> 1.0.5"
   spec.add_dependency 'addressable'
   spec.add_dependency "font-awesome-rails"