upgrade to rails 5.1

Gemfile

 source 'https://rubygems.org'
-gem 'rails', '= 5.0.2'
+gem 'rails', '= 5.1.5'
 gem 'mysql2', '>= 0.3.18', '< 0.5'
 gem 'puma', '~> 3.0'
 gem 'turbolinks', '~> 5'

Gemfile.lock

 GEM
   remote: https://rubygems.org/
   specs:
-    acme-client (0.5.5)
+    acme-client (0.6.2)
       faraday (~> 0.9, >= 0.9.1)
-    actioncable (5.0.2)
-      actionpack (= 5.0.2)
-      nio4r (>= 1.2, < 3.0)
+    actioncable (5.1.5)
+      actionpack (= 5.1.5)
+      nio4r (~> 2.0)
       websocket-driver (~> 0.6.1)
-    actionmailer (5.0.2)
-      actionpack (= 5.0.2)
-      actionview (= 5.0.2)
-      activejob (= 5.0.2)
+    actionmailer (5.1.5)
+      actionpack (= 5.1.5)
+      actionview (= 5.1.5)
+      activejob (= 5.1.5)
       mail (~> 2.5, >= 2.5.4)
       rails-dom-testing (~> 2.0)
-    actionpack (5.0.2)
-      actionview (= 5.0.2)
-      activesupport (= 5.0.2)
+    actionpack (5.1.5)
+      actionview (= 5.1.5)
+      activesupport (= 5.1.5)
       rack (~> 2.0)
-      rack-test (~> 0.6.3)
+      rack-test (>= 0.6.3)
       rails-dom-testing (~> 2.0)
       rails-html-sanitizer (~> 1.0, >= 1.0.2)
-    actionview (5.0.2)
-      activesupport (= 5.0.2)
+    actionview (5.1.5)
+      activesupport (= 5.1.5)
       builder (~> 3.1)
-      erubis (~> 2.7.0)
+      erubi (~> 1.4)
       rails-dom-testing (~> 2.0)
       rails-html-sanitizer (~> 1.0, >= 1.0.3)
-    activejob (5.0.2)
-      activesupport (= 5.0.2)
+    activejob (5.1.5)
+      activesupport (= 5.1.5)
       globalid (>= 0.3.6)
-    activemodel (5.0.2)
-      activesupport (= 5.0.2)
-    activerecord (5.0.2)
-      activemodel (= 5.0.2)
-      activesupport (= 5.0.2)
-      arel (~> 7.0)
-    activesupport (5.0.2)
+    activemodel (5.1.5)
+      activesupport (= 5.1.5)
+    activerecord (5.1.5)
+      activemodel (= 5.1.5)
+      activesupport (= 5.1.5)
+      arel (~> 8.0)
+    activesupport (5.1.5)
       concurrent-ruby (~> 1.0, >= 1.0.2)
       i18n (~> 0.7)
       minitest (~> 5.1)
       tzinfo (~> 1.1)
-    amq-protocol (2.0.1)
-    annotate (2.7.1)
+    amq-protocol (2.3.0)
+    annotate (2.7.2)
       activerecord (>= 3.2, < 6.0)
-      rake (>= 10.4, < 12.0)
-    arel (7.1.4)
-    authie (3.0.0)
-    autoprefixer-rails (6.5.0.2)
+      rake (>= 10.4, < 13.0)
+    arel (8.0.0)
+    authie (3.1.0)
+    autoprefixer-rails (8.0.0)
       execjs
     basic_ssl (1.0.3)
     bcrypt (3.1.11)
-    bson (4.0.4)
+    bson (4.3.0)
     builder (3.2.3)
     bunny (2.5.1)
       amq-protocol (>= 2.0.1)
-    byebug (9.0.6)
+    byebug (10.0.0)
     changey (1.0.0)
       activerecord (>= 4.2, < 6)
     chronic (0.10.2)
-    clockwork (1.0.0)
-      activesupport
+    clockwork (2.0.3)
       tzinfo
-    coffee-rails (4.2.1)
+    coffee-rails (4.2.2)
       coffee-script (>= 2.2.0)
-      railties (>= 4.0.0, < 5.2.x)
+      railties (>= 4.0.0)
     coffee-script (2.4.1)
       coffee-script-source
       execjs
-    coffee-script-source (1.10.0)
+    coffee-script-source (1.12.2)
     concurrent-ruby (1.0.5)
-    createsend (4.1.0)
+    crass (1.0.3)
+    createsend (4.1.2)
       hashie (~> 3.0)
-      httparty (~> 0.10)
-      json (~> 1.0)
-    database_cleaner (1.5.3)
-    deep_merge (1.1.1)
+      httparty (~> 0.14)
+      json (>= 1.0)
+    database_cleaner (1.6.2)
+    deep_merge (1.2.1)
     diff-lcs (1.3)
     dynamic_form (1.1.4)
     encrypto_signo (1.0.0)
-    erubis (2.7.0)
+    erubi (1.7.0)
     execjs (2.7.0)
-    factory_girl (4.8.0)
+    factory_girl (4.9.0)
       activesupport (>= 3.0.0)
-    factory_girl_rails (4.8.0)
-      factory_girl (~> 4.8.0)
+    factory_girl_rails (4.9.0)
+      factory_girl (~> 4.9.0)
       railties (>= 3.0.0)
-    faraday (0.9.2)
+    faraday (0.14.0)
       multipart-post (>= 1.2, < 3)
-    foreman (0.82.0)
+    ffi (1.9.21)
+    foreman (0.84.0)
       thor (~> 0.19.1)
     gelf (3.0.0)
       json
-    globalid (0.3.7)
-      activesupport (>= 4.1.0)
-    haml (5.0.1)
+    globalid (0.4.1)
+      activesupport (>= 4.2.0)
+    haml (5.0.4)
       temple (>= 0.8.0)
       tilt
-    hashie (3.4.6)
-    highline (1.7.8)
-    httparty (0.14.0)
+    hashie (3.5.7)
+    highline (1.7.10)
+    httparty (0.16.0)
       multi_xml (>= 0.5.2)
-    i18n (0.8.1)
-    jquery-rails (4.2.1)
+    i18n (0.9.5)
+      concurrent-ruby (~> 1.0)
+    jquery-rails (4.3.1)
       rails-dom-testing (>= 1, < 3)
       railties (>= 4.2.0)
       thor (>= 0.14, < 2.0)
     json (1.8.6)
-    jwt (1.5.6)
-    kaminari (0.17.0)
-      actionpack (>= 3.0.0)
-      activesupport (>= 3.0.0)
-    loofah (2.0.3)
+    jwt (2.1.0)
+    kaminari (1.1.1)
+      activesupport (>= 4.1.0)
+      kaminari-actionview (= 1.1.1)
+      kaminari-activerecord (= 1.1.1)
+      kaminari-core (= 1.1.1)
+    kaminari-actionview (1.1.1)
+      actionview
+      kaminari-core (= 1.1.1)
+    kaminari-activerecord (1.1.1)
+      activerecord
+      kaminari-core (= 1.1.1)
+    kaminari-core (1.1.1)
+    loofah (2.2.0)
+      crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
-    mail (2.6.4)
-      mime-types (>= 1.16, < 4)
-    method_source (0.8.2)
-    mime-types (3.1)
-      mime-types-data (~> 3.2015)
-    mime-types-data (3.2016.0521)
-    mini_portile2 (2.1.0)
-    minitest (5.10.1)
-    mongo (2.2.4)
-      bson (~> 4.0)
+    mail (2.7.0)
+      mini_mime (>= 0.1.1)
+    method_source (0.9.0)
+    mini_mime (1.0.0)
+    mini_portile2 (2.3.0)
+    minitest (5.11.3)
+    mongo (2.5.0)
+      bson (>= 4.3.0, < 5.0.0)
     moonrope (2.0.1)
       deep_merge (~> 1.0)
       json (~> 1.7)
       rack (>= 1.4)
-    multi_xml (0.5.5)
+    multi_xml (0.6.0)
     multipart-post (2.0.0)
-    mysql2 (0.4.4)
+    mysql2 (0.4.10)
     nifty-utils (1.1.7)
-    nilify_blanks (1.2.1)
+    nilify_blanks (1.3.0)
       activerecord (>= 3.0.0)
       activesupport (>= 3.0.0)
-    nio4r (2.0.0)
-    nokogiri (1.7.2)
-      mini_portile2 (~> 2.1.0)
-    puma (3.8.2)
-    rack (2.0.3)
-    rack-test (0.6.3)
-      rack (>= 1.0)
-    rails (5.0.2)
-      actioncable (= 5.0.2)
-      actionmailer (= 5.0.2)
-      actionpack (= 5.0.2)
-      actionview (= 5.0.2)
-      activejob (= 5.0.2)
-      activemodel (= 5.0.2)
-      activerecord (= 5.0.2)
-      activesupport (= 5.0.2)
-      bundler (>= 1.3.0, < 2.0)
-      railties (= 5.0.2)
+    nio4r (2.2.0)
+    nokogiri (1.8.2)
+      mini_portile2 (~> 2.3.0)
+    puma (3.11.2)
+    rack (2.0.4)
+    rack-test (0.8.2)
+      rack (>= 1.0, < 3)
+    rails (5.1.5)
+      actioncable (= 5.1.5)
+      actionmailer (= 5.1.5)
+      actionpack (= 5.1.5)
+      actionview (= 5.1.5)
+      activejob (= 5.1.5)
+      activemodel (= 5.1.5)
+      activerecord (= 5.1.5)
+      activesupport (= 5.1.5)
+      bundler (>= 1.3.0)
+      railties (= 5.1.5)
       sprockets-rails (>= 2.0.0)
-    rails-dom-testing (2.0.2)
-      activesupport (>= 4.2.0, < 6.0)
-      nokogiri (~> 1.6)
+    rails-dom-testing (2.0.3)
+      activesupport (>= 4.2.0)
+      nokogiri (>= 1.6)
     rails-html-sanitizer (1.0.3)
       loofah (~> 2.0)
-    railties (5.0.2)
-      actionpack (= 5.0.2)
-      activesupport (= 5.0.2)
+    railties (5.1.5)
+      actionpack (= 5.1.5)
+      activesupport (= 5.1.5)
       method_source
       rake (>= 0.8.7)
       thor (>= 0.18.1, < 2.0)
-    rake (11.3.0)
-    rspec (3.5.0)
-      rspec-core (~> 3.5.0)
-      rspec-expectations (~> 3.5.0)
-      rspec-mocks (~> 3.5.0)
-    rspec-core (3.5.4)
-      rspec-support (~> 3.5.0)
-    rspec-expectations (3.5.0)
+    rake (12.3.0)
+    rb-fsevent (0.10.2)
+    rb-inotify (0.9.10)
+      ffi (>= 0.5.0, < 2)
+    rspec (3.7.0)
+      rspec-core (~> 3.7.0)
+      rspec-expectations (~> 3.7.0)
+      rspec-mocks (~> 3.7.0)
+    rspec-core (3.7.1)
+      rspec-support (~> 3.7.0)
+    rspec-expectations (3.7.0)
       diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.5.0)
-    rspec-mocks (3.5.0)
+      rspec-support (~> 3.7.0)
+    rspec-mocks (3.7.0)
       diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.5.0)
-    rspec-rails (3.5.2)
+      rspec-support (~> 3.7.0)
+    rspec-rails (3.7.2)
       actionpack (>= 3.0)
       activesupport (>= 3.0)
       railties (>= 3.0)
-      rspec-core (~> 3.5.0)
-      rspec-expectations (~> 3.5.0)
-      rspec-mocks (~> 3.5.0)
-      rspec-support (~> 3.5.0)
-    rspec-support (3.5.0)
-    sass (3.4.22)
-    sass-rails (5.0.6)
+      rspec-core (~> 3.7.0)
+      rspec-expectations (~> 3.7.0)
+      rspec-mocks (~> 3.7.0)
+      rspec-support (~> 3.7.0)
+    rspec-support (3.7.1)
+    sass (3.5.5)
+      sass-listen (~> 4.0.0)
+    sass-listen (4.0.0)
+      rb-fsevent (~> 0.9, >= 0.9.4)
+      rb-inotify (~> 0.9, >= 0.9.7)
+    sass-rails (5.0.7)
       railties (>= 4.0.0, < 6)
       sass (~> 3.1)
       sprockets (>= 2.8, < 4.0)
       sprockets-rails (>= 2.0, < 4.0)
       tilt (>= 1.1, < 3)
-    secure_headers (3.4.1)
-      useragent
-    sentry-raven (2.1.0)
-      faraday (>= 0.7.6, < 0.10.x)
+    secure_headers (5.0.5)
+      useragent (>= 0.15.0)
+    sentry-raven (2.7.2)
+      faraday (>= 0.7.6, < 1.0)
     sprockets (3.7.1)
       concurrent-ruby (~> 1.0)
       rack (> 1, < 3)
-    sprockets-rails (3.2.0)
+    sprockets-rails (3.2.1)
       actionpack (>= 4.0)
       activesupport (>= 4.0)
       sprockets (>= 3.0.0)
     temple (0.8.0)
     thor (0.19.4)
     thread_safe (0.3.6)
-    tilt (2.0.5)
-    turbolinks (5.0.1)
-      turbolinks-source (~> 5)
-    turbolinks-source (5.0.0)
-    tzinfo (1.2.3)
+    tilt (2.0.8)
+    turbolinks (5.1.0)
+      turbolinks-source (~> 5.1)
+    turbolinks-source (5.1.0)
+    tzinfo (1.2.5)
       thread_safe (~> 0.1)
-    uglifier (3.0.2)
+    uglifier (4.1.6)
       execjs (>= 0.3.0, < 3)
-    useragent (0.16.8)
+    useragent (0.16.10)
     websocket-driver (0.6.5)
       websocket-extensions (>= 0.1.0)
-    websocket-extensions (0.1.2)
+    websocket-extensions (0.1.3)
 PLATFORMS
   ruby
@@ -256,7 +273,7 @@ DEPENDENCIES
   nilify_blanks
   nio4r
   puma (~> 3.0)
-  rails (= 5.0.2)
+  rails (= 5.1.5)
   rspec
   rspec-rails
   sass-rails (~> 5.0)
@@ -266,4 +283,4 @@ DEPENDENCIES
   uglifier (>= 1.3.0)
 BUNDLED WITH
-   1.14.6
+   1.16.0