implement greenzone feature, step 2

snippets/map.html

@@ -23,9 +23,9 @@
   <div class="modal-background"></div>
   <div class="modal-card">
     <header class="modal-card-head">
-      <p class="modal-card-title">Koordinaten als gr&uuml;ne Zone &uuml;bernehmen?</p>
+      <p class="modal-card-title">Folgende Koordinaten als gr&uuml;ne Zone &uuml;bernehmen?</p>
     </header>
-    <div class="modal-card-body">
+    <div id="yesnomodalbody" class="modal-card-body">
       <!-- Content ... -->
     </div>
     <footer class="modal-card-foot">