Upgrade to Rails 5.2.8.1 on Ruby 2.5.8

- Bump rails 4.2.11.3 → 5.2.8.1, ruby 2.4.10 → 2.5.8
- Upgrade acts-as-taggable-on ~> 3.5 → ~> 6.0
- Upgrade exception_notification ~> 4.4 → ~> 4.5
- Upgrade globalize ~> 5.0 → ~> 5.2.0
- Upgrade pg ~> 0.17 → ~> 1.0
- Upgrade sass-rails ~> 4.0 → ~> 5.0
- Upgrade libxml-ruby to ~> 3.2 (5.x requires Ruby 3.2+)
- Pin awesome_nested_set ~> 3.4.0 (3.9 has lft/rgt update bug)
- Add rails-controller-testing gem
- Add assets initializer for jquery precompile
- Add acts_as_taggable missing indexes migration
- Set eager_load, serve_static_files, active_record settings

1 files changed, 9 insertions, 8 deletions

diff --git a/Gemfile b/Gemfile
index f00395b..b43b986 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,18 +1,18 @@
 source 'https://rubygems.org'
 
-gem 'rails', '4.2.11.3'
+gem 'rails', '5.2.8.1'
 
-gem 'pg', '~> 0.17.0'
+gem 'pg', '~> 1.0'
 
-gem 'acts-as-taggable-on', '~> 3.5'
-gem 'awesome_nested_set', '~> 3.1'
+gem 'acts-as-taggable-on', '~> 6.0'
+gem 'awesome_nested_set', '~> 3.4.0'
 gem 'acts_as_list'
-gem 'globalize', '~> 5.0'
+gem 'globalize', '~> 5.2.0'
 gem 'routing-filter', '~> 0.6'
 gem 'paperclip', '~> 3.5'
 gem 'will_paginate', '~> 3.0'
-gem 'exception_notification'
-gem 'libxml-ruby', :require => 'xml'
+gem 'exception_notification', '~> 4.5'
+gem 'libxml-ruby', '~> 3.2', :require => 'xml'
 
 gem 'nokogiri', '~> 1.10.10'
 gem 'loofah', '~> 2.20.0'
@@ -22,13 +22,14 @@ gem 'jquery-rails'
 gem 'unicorn', '~> 1.1'
 
 group :assets do
-  gem 'sass-rails',   '~> 4.0'
+  gem 'sass-rails',   '~> 5.0'
   gem 'coffee-rails', '~> 4.0'
   gem 'uglifier', '>= 1.0.3'
 end
 
 group :test do
   gem 'test-unit', '~> 3.5'
+  gem 'rails-controller-testing'
 end
 
 gem 'chaos_calendar', :git => 'https://github.com/erdgeist/chaoscalendar.git',