Enable guided tour with CSP switched on

Change-Id: I3235a3fc45f5a28ce6eb4995fe6c767551370643
diff --git a/t/intro.t b/t/intro.t
index 0069713..3178098 100644
--- a/t/intro.t
+++ b/t/intro.t
@@ -14,6 +14,8 @@
   ->text_is('h1 span', 'KorAP - Corpus Analysis Platform')
   ->element_exists('div.intro')
   ->text_is('div.intro > p > strong', 'KorAP')
+  ->content_unlike(qr!onload!)
+  ->text_is('#link-guided-tour', 'guided tour')
   ;
 
 # Only routed when existing