Refactoring Conference/Event media to new media object

close #420

spec/spec_helper.rb

@@ -64,6 +64,10 @@ RSpec.configure do |config|
   # poltergeist as a underlying mech for Capybara
   Capybara.javascript_driver = :poltergeist
 
+  Capybara.register_driver :poltergeist do |app|
+    Capybara::Poltergeist::Driver.new(app, js_errors: false)
+  end
+
   # Includes helpers and connect them to specific types of tests
   config.include FactoryGirl::Syntax::Methods
   config.include OmniauthMacros