small code cleanup

flow.php

@@ -19,21 +19,10 @@
             </div>
         </div>
 
-        <!-- Dialog to ask user for ICS URL if not specified through GET -->
-        <div class="dialog-parent <?php hideMissingIcsDialog(); ?>">
-            <div class="dialog">
-                <div class="dialog-content">
-                    Es wurde keine ICS URL als GET Parameter &uuml;bergeben.<br>
-                    <br>
-                    <label>Anzuzeigende ICS URL:</label>
-                    <input type="text" form="dialog-form" name="icsUrl" />
-                </div>
-                <div class="dialog-buttons">
-                    <form id="dialog-form" method="get"></form>
-                    <input type="submit" form="dialog-form" value="OK" />
-                </div>
-            </div>
-        </div>
+        <?php echoIcsUrlDialog(); ?>
+
+        <!-- Renders PHP errors nicely as HTML dialog -->
+        <?php echoErrorsHtml(); ?>
     </body>
 
     <script src="script/dialog.js"></script>