Updated to ruby 2.4 and rails 4.2.8

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
@@ -88,7 +87,7 @@ GEM
     bootstrap3-datetimepicker-rails (3.0.3)
       momentjs-rails (>= 2.8.1)
     browser (0.6.0)
-    builder (3.2.2)
+    builder (3.2.3)
     byebug (3.1.2)
       columnize (~> 0.8)
       debugger-linecache (~> 1.2)
@@ -197,8 +196,8 @@ 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)
@@ -265,17 +264,17 @@ 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)
@@ -288,7 +287,7 @@ 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)
@@ -354,22 +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)
@@ -406,13 +405,13 @@ 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 (2.2.1)
-    rake (10.5.0)
+    rake (12.0.0)
     rb-fsevent (0.9.4)
     rb-inotify (0.9.4)
       ffi (>= 0.5.0)
@@ -510,7 +509,7 @@ 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)
@@ -551,7 +550,7 @@ GEM
       chronic (>= 0.6.3)
     xpath (2.0.0)
       nokogiri (~> 1.3)
-    yajl-ruby (1.2.0)
+    yajl-ruby (1.3.0)
 
 PLATFORMS
   ruby
@@ -619,7 +618,7 @@ 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!

db/schema.rb

@@ -13,20 +13,17 @@
 
 ActiveRecord::Schema.define(version: 20170629162450) do
 
-  # These are extensions that must be enabled in order to support this database
-  enable_extension "plpgsql"
-
   create_table "ahoy_events", force: :cascade do |t|
-    t.integer  "visit_id"
+    t.uuid     "visit_id",   limit: 16
     t.integer  "user_id"
     t.string   "name"
     t.text     "properties"
     t.datetime "time"
   end
 
-  add_index "ahoy_events", ["time"], name: "index_ahoy_events_on_time", using: :btree
+  add_index "ahoy_events", ["time"], name: "index_ahoy_events_on_time"
-  add_index "ahoy_events", ["user_id"], name: "index_ahoy_events_on_user_id", using: :btree
+  add_index "ahoy_events", ["user_id"], name: "index_ahoy_events_on_user_id"
-  add_index "ahoy_events", ["visit_id"], name: "index_ahoy_events_on_visit_id", using: :btree
+  add_index "ahoy_events", ["visit_id"], name: "index_ahoy_events_on_visit_id"
 
   create_table "answers", force: :cascade do |t|
     t.string   "title"
@@ -69,9 +66,9 @@ ActiveRecord::Schema.define(version: 20170629162450) do
     t.integer  "rgt"
   end
 
-  add_index "comments", ["commentable_id"], name: "index_comments_on_commentable_id", using: :btree
+  add_index "comments", ["commentable_id"], name: "index_comments_on_commentable_id"
-  add_index "comments", ["commentable_type"], name: "index_comments_on_commentable_type", using: :btree
+  add_index "comments", ["commentable_type"], name: "index_comments_on_commentable_type"
-  add_index "comments", ["user_id"], name: "index_comments_on_user_id", using: :btree
+  add_index "comments", ["user_id"], name: "index_comments_on_user_id"
 
   create_table "commercials", force: :cascade do |t|
     t.string   "commercial_id"
@@ -141,7 +138,7 @@ ActiveRecord::Schema.define(version: 20170629162450) do
     t.datetime "updated_at"
   end
 
-  add_index "delayed_jobs", ["priority", "run_at"], name: "delayed_jobs_priority", using: :btree
+  add_index "delayed_jobs", ["priority", "run_at"], name: "delayed_jobs_priority"
 
   create_table "difficulty_levels", force: :cascade do |t|
     t.string   "title"
@@ -194,10 +191,10 @@ ActiveRecord::Schema.define(version: 20170629162450) do
     t.datetime "updated_at",  null: false
   end
 
-  add_index "event_schedules", ["event_id", "schedule_id"], name: "index_event_schedules_on_event_id_and_schedule_id", unique: true, using: :btree
+  add_index "event_schedules", ["event_id", "schedule_id"], name: "index_event_schedules_on_event_id_and_schedule_id", unique: true
-  add_index "event_schedules", ["event_id"], name: "index_event_schedules_on_event_id", using: :btree
+  add_index "event_schedules", ["event_id"], name: "index_event_schedules_on_event_id"
-  add_index "event_schedules", ["room_id"], name: "index_event_schedules_on_room_id", using: :btree
+  add_index "event_schedules", ["room_id"], name: "index_event_schedules_on_room_id"
-  add_index "event_schedules", ["schedule_id"], name: "index_event_schedules_on_schedule_id", using: :btree
+  add_index "event_schedules", ["schedule_id"], name: "index_event_schedules_on_schedule_id"
 
   create_table "event_types", force: :cascade do |t|
     t.string  "title",                                 null: false
@@ -311,7 +308,7 @@ ActiveRecord::Schema.define(version: 20170629162450) do
     t.integer  "schedule_interval",    default: 15,    null: false
   end
 
-  add_index "programs", ["selected_schedule_id"], name: "index_programs_on_selected_schedule_id", using: :btree
+  add_index "programs", ["selected_schedule_id"], name: "index_programs_on_selected_schedule_id"
 
   create_table "qanswers", force: :cascade do |t|
     t.integer  "question_id"
@@ -383,8 +380,8 @@ ActiveRecord::Schema.define(version: 20170629162450) do
     t.string   "resource_type"
   end
 
-  add_index "roles", ["name", "resource_type", "resource_id"], name: "index_roles_on_name_and_resource_type_and_resource_id", using: :btree
+  add_index "roles", ["name", "resource_type", "resource_id"], name: "index_roles_on_name_and_resource_type_and_resource_id"
-  add_index "roles", ["name"], name: "index_roles_on_name", using: :btree
+  add_index "roles", ["name"], name: "index_roles_on_name"
 
   create_table "rooms", force: :cascade do |t|
     t.string  "guid",     null: false
@@ -399,7 +396,7 @@ ActiveRecord::Schema.define(version: 20170629162450) do
     t.datetime "updated_at", null: false
   end
 
-  add_index "schedules", ["program_id"], name: "index_schedules_on_program_id", using: :btree
+  add_index "schedules", ["program_id"], name: "index_schedules_on_program_id"
 
   create_table "splashpages", force: :cascade do |t|
     t.integer  "conference_id"
@@ -523,17 +520,17 @@ ActiveRecord::Schema.define(version: 20170629162450) do
     t.boolean  "is_disabled",            default: false
   end
 
-  add_index "users", ["confirmation_token"], name: "index_users_on_confirmation_token", unique: true, using: :btree
+  add_index "users", ["confirmation_token"], name: "index_users_on_confirmation_token", unique: true
-  add_index "users", ["email"], name: "index_users_on_email", unique: true, using: :btree
+  add_index "users", ["email"], name: "index_users_on_email", unique: true
-  add_index "users", ["reset_password_token"], name: "index_users_on_reset_password_token", unique: true, using: :btree
+  add_index "users", ["reset_password_token"], name: "index_users_on_reset_password_token", unique: true
-  add_index "users", ["username"], name: "index_users_on_username", unique: true, using: :btree
+  add_index "users", ["username"], name: "index_users_on_username", unique: true
 
   create_table "users_roles", force: :cascade do |t|
     t.integer "role_id"
     t.integer "user_id"
   end
 
-  add_index "users_roles", ["user_id", "role_id"], name: "index_users_roles_on_user_id_and_role_id", using: :btree
+  add_index "users_roles", ["user_id", "role_id"], name: "index_users_roles_on_user_id_and_role_id"
 
   create_table "vchoices", force: :cascade do |t|
     t.integer "vday_id"
@@ -577,10 +574,10 @@ ActiveRecord::Schema.define(version: 20170629162450) do
     t.integer  "conference_id"
   end
 
-  add_index "versions", ["item_type", "item_id"], name: "index_versions_on_item_type_and_item_id", using: :btree
+  add_index "versions", ["item_type", "item_id"], name: "index_versions_on_item_type_and_item_id"
 
   create_table "visits", force: :cascade do |t|
-    t.uuid     "visitor_id"
+    t.uuid     "visitor_id",       limit: 16
     t.string   "ip"
     t.text     "user_agent"
     t.text     "referrer"
@@ -602,7 +599,7 @@ ActiveRecord::Schema.define(version: 20170629162450) do
     t.datetime "started_at"
   end
 
-  add_index "visits", ["user_id"], name: "index_visits_on_user_id", using: :btree
+  add_index "visits", ["user_id"], name: "index_visits_on_user_id"
 
   create_table "votes", force: :cascade do |t|
     t.integer  "event_id"