align link to courses/education with...

align link to courses/education with https://gitlab.hzdr.de/hifis/overall/hifis.net/-/issues/274#note_1379247

_data/navigation.yml

@@ -29,6 +29,8 @@ header:
         url: "services/backbone-overview"
   - title: "Learning & Training"
     entries:
+      - title: "Education & Training Overview"
+        url: "/services/software/training"
       - title: "HIFIS Courses"
         url: "https://events.hifis.net/category/4/"
         external: True

_includes/frontpage/title-content.html

@@ -7,16 +7,16 @@
     <div class="services-box">
         <div class="services-title-buttons">
             <a href="https://cloud.helmholtz.de/services" class="btn btn-light btn-lg text-dark" style="min-height: 3.3rem !important">
-            Cloud Services <i class="fas fa-external-link-alt"></i>
+            Cloud Services
             </a>
-            <a href="{{ '/services/software/training' | relative_url }}" class="btn btn-light btn-lg text-dark" style="min-height: 3.3rem !important">
+            <a href="https://events.hifis.net/category/4/" class="btn btn-light btn-lg text-dark" style="min-height: 3.3rem !important">
                 HIFIS Courses
             </a>
             <a href="{% link services/software/consulting.html %}" class="btn btn-light btn-lg text-dark" style="min-height: 3.3rem !important">
                 Software Engineering Consulting
             </a>
             <a href="https://aai.helmholtz.de" class="btn btn-light btn-lg text-dark" style="min-height: 3.3rem !important">
-                Identity &amp; Access Management (AAI) <i class="fas fa-external-link-alt"></i>
+                Identity &amp; Access Management (AAI)
             </a>
         </div>
     </div>