make it possible to add/remove administrators

include/form_edit.php

@@ -21,6 +21,18 @@
     <td> &nbsp; Real Name </td>
     <td> <input type="text" name="ext_realname" value="<?php echo $ext_realname; ?>"> </td>
 </tr>
+<?php
+// if we manage another user we can give him administrator rights
+if($iUserId == $_REQUEST['userId'])
+{
+?>
+<tr>
+    <td> &nbsp; Administrator </td>
+    <td> <input type="checkbox" name="ext_hasadmin" "<?php echo $ext_hasadmin; ?>" value="on"> </td>
+</tr>
+<?php
+}
+?>
 <tr>
     <td colspan=2>&nbsp;</td>
 </tr>