Updated rails to 4.2.8

Rails update to 4.2.8 is necessary to get rid of Bignum and Fixnum warnings.
Ruby had two visible Integer classes: Fixnum and Bignum.
Ruby 2.4 unifies them into Integer. All C extensions which touch the Fixnum or Bignum class need to be fixed.

Gemfile

@@ -6,7 +6,7 @@ if Gem::Version.new(Bundler::VERSION) < Gem::Version.new('1.8.4')
 end
 
 # as web framework
-gem 'rails', '~> 4.2'
+gem 'rails', '~> 4.2.8'
 
 # enables serving assets in production and setting your logger to standard out
 # both of which are required to run an application on a twelve-factor provider

Gemfile.lock

@@ -12,40 +12,39 @@ GEM
   remote: https://rubygems.org/
   remote: https://rails-assets.org/
   specs:
-    actionmailer (4.2.7.1)
+    actionmailer (4.2.9)
-      actionpack (= 4.2.7.1)
+      actionpack (= 4.2.9)
-      actionview (= 4.2.7.1)
+      actionview (= 4.2.9)
-      activejob (= 4.2.7.1)
+      activejob (= 4.2.9)
       mail (~> 2.5, >= 2.5.4)
       rails-dom-testing (~> 1.0, >= 1.0.5)
-    actionpack (4.2.7.1)
+    actionpack (4.2.9)
-      actionview (= 4.2.7.1)
+      actionview (= 4.2.9)
-      activesupport (= 4.2.7.1)
+      activesupport (= 4.2.9)
       rack (~> 1.6)
       rack-test (~> 0.6.2)
       rails-dom-testing (~> 1.0, >= 1.0.5)
       rails-html-sanitizer (~> 1.0, >= 1.0.2)
-    actionview (4.2.7.1)
+    actionview (4.2.9)
-      activesupport (= 4.2.7.1)
+      activesupport (= 4.2.9)
       builder (~> 3.1)
       erubis (~> 2.7.0)
       rails-dom-testing (~> 1.0, >= 1.0.5)
-      rails-html-sanitizer (~> 1.0, >= 1.0.2)
+      rails-html-sanitizer (~> 1.0, >= 1.0.3)
     active_model_serializers (0.9.4)
       activemodel (>= 3.2)
-    activejob (4.2.7.1)
+    activejob (4.2.9)
-      activesupport (= 4.2.7.1)
+      activesupport (= 4.2.9)
       globalid (>= 0.3.0)
-    activemodel (4.2.7.1)
+    activemodel (4.2.9)
-      activesupport (= 4.2.7.1)
+      activesupport (= 4.2.9)
       builder (~> 3.1)
-    activerecord (4.2.7.1)
+    activerecord (4.2.9)
-      activemodel (= 4.2.7.1)
+      activemodel (= 4.2.9)
-      activesupport (= 4.2.7.1)
+      activesupport (= 4.2.9)
       arel (~> 6.0)
-    activesupport (4.2.7.1)
+    activesupport (4.2.9)
       i18n (~> 0.7)
-      json (~> 1.7, >= 1.7.7)
       minitest (~> 5.1)
       thread_safe (~> 0.3, >= 0.3.4)
       tzinfo (~> 1.1)
@@ -67,7 +66,7 @@ GEM
       request_store
       user_agent_parser
       uuidtools
-    arel (6.0.3)
+    arel (6.0.4)
     ast (2.3.0)
     autoprefixer-rails (5.1.9)
       execjs
@@ -88,8 +87,11 @@ GEM
     bootstrap3-datetimepicker-rails (3.0.3)
       momentjs-rails (>= 2.8.1)
     browser (0.6.0)
-    builder (3.2.2)
     byebug (9.0.6)
+
+    builder (3.2.3)
+      columnize (~> 0.8)
+      debugger-linecache (~> 1.2)
     cancancan (1.13.1)
     capybara (2.6.2)
       addressable
@@ -193,8 +195,8 @@ GEM
     formtastic-bootstrap (3.1.1)
       formtastic (>= 3.0)
     geocoder (1.2.2)
-    globalid (0.3.6)
+    globalid (0.4.0)
-      activesupport (>= 4.1.0)
+      activesupport (>= 4.2.0)
     gravtastic (3.2.6)
     guard (2.6.0)
       formatador (>= 0.2.4)
@@ -261,17 +263,17 @@ GEM
     loofah (2.0.3)
       nokogiri (>= 1.5.9)
     lumberjack (1.0.5)
-    mail (2.6.3)
+    mail (2.6.6)
-      mime-types (>= 1.16, < 3)
+      mime-types (>= 1.16, < 4)
     method_source (0.8.2)
-    mime-types (2.99.1)
+    mime-types (2.99.3)
     mimemagic (0.3.2)
     mina (0.3.8)
       open4 (~> 1.3.4)
       rake
     mini_magick (4.5.1)
     mini_portile2 (2.2.0)
-    minitest (5.10.1)
+    minitest (5.10.2)
     momentjs-rails (2.8.1)
       railties (>= 3.1)
     monetize (1.4.0)
@@ -284,7 +286,7 @@ GEM
       monetize (~> 1.4.0)
       money (~> 6.7)
       railties (>= 3.0)
-    multi_json (1.11.2)
+    multi_json (1.12.1)
     multi_xml (0.5.5)
     multipart-post (2.0.0)
     mysql2 (0.4.2)
@@ -351,22 +353,22 @@ GEM
       coderay (~> 1.0)
       method_source (~> 0.8)
       slop (~> 3.4)
-    rack (1.6.4)
+    rack (1.6.8)
     rack-openid (1.3.1)
       rack (>= 1.1.0)
       ruby-openid (>= 2.1.8)
     rack-test (0.6.3)
       rack (>= 1.0)
-    rails (4.2.7.1)
+    rails (4.2.9)
-      actionmailer (= 4.2.7.1)
+      actionmailer (= 4.2.9)
-      actionpack (= 4.2.7.1)
+      actionpack (= 4.2.9)
-      actionview (= 4.2.7.1)
+      actionview (= 4.2.9)
-      activejob (= 4.2.7.1)
+      activejob (= 4.2.9)
-      activemodel (= 4.2.7.1)
+      activemodel (= 4.2.9)
-      activerecord (= 4.2.7.1)
+      activerecord (= 4.2.9)
-      activesupport (= 4.2.7.1)
+      activesupport (= 4.2.9)
       bundler (>= 1.3.0, < 2.0)
-      railties (= 4.2.7.1)
+      railties (= 4.2.9)
       sprockets-rails
     rails-assets-bootstrap (3.3.6)
       rails-assets-jquery (>= 1.9.1, < 3)
@@ -401,14 +403,14 @@ GEM
       rails_stdout_logging
     rails_serve_static_assets (0.0.4)
     rails_stdout_logging (0.0.3)
-    railties (4.2.7.1)
+    railties (4.2.9)
-      actionpack (= 4.2.7.1)
+      actionpack (= 4.2.9)
-      activesupport (= 4.2.7.1)
+      activesupport (= 4.2.9)
       rake (>= 0.8.7)
       thor (>= 0.18.1, < 2.0)
-    rainbow (2.2.2)
+
-      rake
+    rainbow (2.2.1)
-    rake (10.5.0)
+    rake (12.0.0)
     rb-fsevent (0.9.4)
     rb-inotify (0.9.4)
       ffi (>= 0.5.0)
@@ -506,7 +508,7 @@ GEM
     sysexits (1.2.0)
     term-ansicolor (1.3.2)
       tins (~> 1.0)
-    thor (0.19.1)
+    thor (0.19.4)
     thread_safe (0.3.6)
     tilt (1.4.1)
     timecop (0.7.1)
@@ -615,7 +617,7 @@ DEPENDENCIES
   poltergeist
   prawn-qrcode (~> 0.2.2.1)
   prawn_rails
-  rails (~> 4.2)
+  rails (~> 4.2.8)
   rails-assets-bootstrap-markdown!
   rails-assets-date.format!
   rails-assets-holderjs!