Improve supplier settings logick

spec/acceptance_steps/supplier_steps.rb

@@ -23,3 +23,7 @@ step "the supplier has a night offset of :minutes minutes" do |minutes|
   @supplier.night_offset = minutes
   @supplier.save
 end
+
+step "the supplier name in the page should be :name" do |name|
+  page.find('.top-menu .supplier-name').text.should == name
+end