minor: allow to switch to advanced mode in simple view mode (SVM)

SVN: 18991

openbis/source/java/ch/systemsx/cisd/openbis/public/welcomePageSimple.html

@@ -6,4 +6,6 @@ Try using one of these pages to find data of interest:<br>
 <li><a href="#action=BROWSE&entity=MATERIAL" target="blank">Material Browser</a>
 <li><a href="#action=SEARCH&entity=DATA_SET" target="blank">Data Set Search</a>
 </ul>
+<br><br>
+If you are the administrator or advanced user, switch to the <a href="?viewMode=normal">advanced mode</a>
 </div> 
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