Add new templates for Dienstleistungen, Kontakt, Projekte, and Team pages

- Created 'dienstleistungen.html' to showcase services offered, including inventory system, license management, support, consulting, security concepts, and training.
- Created 'kontakt.html' for contact information, including email and phone details, along with a booking section for appointments.
- Created 'projekte.html' to highlight current and past projects and clients, providing insights into collaborations with educational institutions.
- Created 'team.html' to introduce the team structure, roles, and selected references in the educational sector.

Website/templates/blog.html

@@ -93,7 +93,7 @@
 {% block content %}
 <section class="blog-header">
     <h1>Blog</h1>
-    <p>Neuigkeiten und Insights rund um IT-Loesungen und Projekte</p>
+    <p>Neuigkeiten und Insights rund um Updates und Technologie</p>
 </section>
 
 {% if posts %}
@@ -112,6 +112,6 @@
         {% endfor %}
     </section>
 {% else %}
-    <p style="text-align: center; color: #5a7a8f; padding: 2rem 0;">Noch keine Beitraege veroeffentlicht.</p>
+    <p style="text-align: center; color: #5a7a8f; padding: 2rem 0;">Noch keine Beiträge veröffentlicht.</p>
 {% endif %}
 {% endblock %}