Fix and enable feature Persistent settings

* Reuse existing steps where possible
* Rename steps file to match convention
* Moved unrelated steps to a new file
* Added wait for saving

https://mingle.corp.wikimedia.org/projects/internationalization/cards/3822

Bug: 56885
Change-Id: I480058430696579947187265b940ea46156f1519

tests/browser/features/support/pages/live_preview_of_display_language_steps.rb

@@ -0,0 +1,24 @@
+When(/^I set English font to System$/) do
+	on(PanelPage).select_font_for_content = 'System font'
+end
+
+And(/^I set English font to OpenDyslexic$/) do
+	on(PanelPage).select_font_for_content = 'OpenDyslexic'
+end
+
+Then(/^the selected content font must be OpenDyslexic$/) do
+	on(PanelPage).select_font_for_content.should == 'OpenDyslexic'
+end
+
+And(/^I select a language different than English for display language$/) do
+	on(PanelPage).other_language_button_element.click
+end
+
+And(/^I click on the link to select Hindi$/) do
+	on(InterlanguagePage).hindi_link_element.click
+end
+
+Then(/^I should see the text in the language panel in (.+?)$/) do |language|
+	code = on(PanelPage).language_to_code(language)
+	on(PanelPage).uls_display_settings_element.attribute('lang').should == code
+end