Make more tests pass in sandbox.translatewiki.net

* When ULS is in personal, cancel opens the language selector
  again but apply doesn't.
* Created separate steps for testing the ULS trigger in personal
  position, different behavior with different configuration.

Change-Id: Ifb7f101f2bfacd32c11cba69e7f2c01fe9bd9bb7

tests/browser/features/step_definitions/uls_triggers_steps.rb

@@ -2,6 +2,6 @@ When(/^I click language selector trigger element$/) do
 	on(RandomPage).uls_trigger
 end
 
-Then(/^I should see the Language selector$/) do
-	on(RandomPage).language_settings_dialog_element.should be_visible
+Then(/^I should see the language selector$/) do
+	on(ULSPage).uls_element.should be_visible
 end