Show most recent extension reason on admin extend modal.

www/aptui/js/extend.js

@@ -313,8 +313,9 @@ define(['underscore', 'js/quickvm_sup',
 		if (extendfor && isadmin) {
 		    $("#howlong_extend").val(extendfor);
 		}
-		if ($('#extension_reason').length && !isadmin) {
+		if ($('#extension_reason').length) {
 		    $("#why_extend").val($('#extension_reason').val());
+		    $("#why_extend_div").removeClass("hidden");
 		}
 		$(modalname).off('shown.bs.modal');
 	    });

www/aptui/template/admin-extend-modal.html

@@ -17,6 +17,16 @@
 		</div>
 	      </div>
 	      <br>
+	      <div id='why_extend_div' class='hidden'>
+		<center>
+		  Most recent Extension Reason
+		  <br>
+		  <textarea id='why_extend' readonly
+			    class='form-control align-center-inline'
+			    rows=5></textarea>
+		</center>
+		<br>
+	      </div>
               <button class='btn btn-primary btn-sm align-center'
 	              id='request-extension'
                       type='submit' name='request'>Extend</button>