Initial Version

include/modal_wait.html

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+<!-- MODAL WAIT -->
+<div class="modal fade bs-example-modal-sm" id="wait" tabindex="-1" role="dialog" aria-hidden="true" data-backdrop="static" style="padding-top: 15%;">
+  <div class="modal-dialog modal-sm">
+    <div class="modal-content">
+        <div class="modal-header">
+          <h4 class="modal-title mb-1 text-dark text-uppercase">
+            <center><i class="bi bi-hourglass-split"></i><br> Work in progress ...</center>
+          </h4>
+        </div>
+        <div class="modal-body">
+          <div class="progress">
+              <div class="progress-bar progress-bar-secondary progress-bar-striped progress-bar-animated" style="width: 100%"></div>
+          </div>
+        </div>
+    </div>
+  </div>
+</div>