Also hide branches from source file summary and ignore excluded branches

Author: Flamefire

gcovr-templates/html/source_page.summary.html

@@ -9,9 +9,11 @@ <h2 class="source-filename">{{filename}}</h2>
       <span class="stat {{functions.class}}">
         <strong>{{functions.coverage}}%</strong> Functions ({{functions.exec}}/{{functions.total}})
       </span>
+      {% if info.branches.total > info.branches.excluded %}
       <span class="stat {{branches.class}}">
-        <strong>{{branches.coverage}}%</strong> Branches ({{branches.exec}}/{{branches.total}})
+        <strong>{{branches.coverage}}%</strong> Branches ({{branches.exec}}/{{branches.total - branches.excluded}})
       </span>
+      {% endif %}
     </div>
   </div>