Merge branch 'hl-bugfix' into 'master'

Highlight bugfix

Fixes:

* snippet rendering bug #2011
* dev fixtures has invalid root user

See merge request !1532

app/views/shared/_file_highlight.html.haml

@@ -7,4 +7,5 @@
         = link_to "#L#{i}", id: "L#{i}", rel: "#L#{i}" do
           %i.fa.fa-link
           = i
-  = highlight(blob.name, blob.data)
+  :preserve
+    #{highlight(blob.name, blob.data)}

db/fixtures/development/01_admin.rb

@@ -3,6 +3,7 @@ Gitlab::Seeder.quiet do
     s.id = 1
     s.name = 'Administrator'
     s.email = 'admin@example.com'
+    s.notification_email = 'admin@example.com'
     s.username = 'root'
     s.password = '5iveL!fe'
     s.admin = true