MBS-10502: Localize aria label of close button

Author: PhMemmel

templates/advancedsettings.mustache

@@ -51,7 +51,7 @@
     <div class="card-body p-2">
         <div class="card-header alert alert-dark d-flex align-items-center justify-content-between">
             <span>{{#str}} advancedsettings, learningmap {{/str}}</span>
-            <button type="button" class="mb-1 close" aria-label="Close" id="learningmap-advanced-settings-close">
+            <button type="button" class="mb-1 close" aria-label="{{#str}} closebuttontitle {{/str}}" id="learningmap-advanced-settings-close">
                 <span>&times;</span>
             </button>
         </div>