Move code to encrypt into PasswordEntry function

Add Update Masterkey feature

server/index.php

@@ -157,6 +157,20 @@ if ($user != "")
 }
 ?>
 </div>
+<div id="update_masterkey">
+<?php
+    global $user;
+
+if ($user != "")
+{
+    echo "<b>Update Masterkey</b><br/>\n";
+
+    echo 'Old master key <input type="text" id="oldmkey"/>';
+    echo 'New master key <input type="text" id="newmkey" onkeyup="chkPass(this.value);"/>';
+    echo '<input type="button" value="Update masterkey" onClick="update_masterkey();"/>';
+}
+?>
+</div>
 </div>
 </body>
 </html>