update conference links - add ng-europe; remove AngularConnect

Author: katcita

public/_includes/_hero-home.jade

@@ -8,6 +8,6 @@ header(class="background-sky")
   .banner.banner-floaty
     .banner-ng-annoucement
       div(class="banner-text" align="center")
-        p Join us for AngularConnect in London, UK this September!
+        p Join us for ng-europe in Paris, France this October!
       div(class="banner-button")
-        a(href="http://angularconnect.com/?utm_source=angular&utm_medium=banner&utm_campaign=angular-banner" target="_blank" class="button md-button") Register now
+        a(href="https://ngeurope.org/?utm_source=angular&utm_medium=banner&utm_campaign=angular-banner" target="_blank" class="button md-button") Register now