Replace Timecop with new ActiveSupport helpers

features/step_definitions/generic_steps.rb

@@ -12,7 +12,7 @@ end
 
 Given /^the date is "(.*?)"$/ do |date|
   # remember to tag the scenario with @reset_time to reset this travel
-  Timecop.travel(date)
+  travel_to date
 end
 
 Given(/^I have selected the view for group by (project|context)$/) do |grouping|

features/support/hooks.rb

@@ -9,5 +9,5 @@ Before('@aruba') do
 end
 
 After('@reset_time') do
-	Timecop.return
+	travel_back
 end