Upgrade to Rails 5

Update config with rails app:update
Update schema.rb rails db:migrate
Add puma
Make jobs and models inherit from ApplicationJob and ApplicationRecord
Update acts_as_list to 0.9.7 in order to fix
"undefined method `sanitize_sql_hash_for_conditions'" error
Update web-console to 2.3.0 to fix a 500 internal server error
Replace before_filter with before_action
Add rails-controller-testing gem
Add prepend: :true to protect_from_forgery in ApplicationController to
avoid ActionController::InvalidAuthenticityToken exceptions
Remove activeuuid
Update formtastic to 3.1.5 to fix deprecation warnings and issues
with the Input class
Update ahoy_matey to 1.6.0
Update cancancan to 2.0.0 to fix issues with malformed sql queries
Fix program spec
Fix issue with the picture being nil in admin/Organizations#new and #edit
and Organizations#show
Fix ActiveRecord::Base.raise_in_transactional_callbacks= deprecation
warning by removing an unnecessary line in application.rb
Fix failing versions specs

config/environments/production.rb

@@ -15,7 +15,7 @@ Osem::Application.configure do
   config.eager_load = true
 
   # Disable Rails's static asset server (Apache or nginx will already do this)
-  config.serve_static_files = false
+  config.public_file_server.enabled = false
   # Compress JavaScripts and CSS
   config.assets.compress = true
 

config/environments/test.rb

@@ -8,8 +8,8 @@ Osem::Application.configure do
   config.cache_classes = true
 
   # Configure static asset server for tests with Cache-Control for performance
-  config.serve_static_files = true
-  config.static_cache_control = 'public, max-age=3600'
+  config.public_file_server.enabled = true
+  config.public_file_server.headers = { 'Cache-Control' => 'public, max-age=3600' }
 
   # Do not eager load code on boot.
   config.eager_load = false