* Fixed security issue caused by sensitive property in req.data

* Fixed issue caused by setting a Metadata property to a Java value, e.g. java.net.URL instance becomes string without quotes. (Could this be a Rhino bug?)
 * Finalized conversion of AV_USER table to simple naming scheme ("user")
 * Added global getTitle() method which returns either site.title or root.sys_title
 * Implemented universal HopObject.value() method
 * Rededicated User.update() method since its previous functionality is now taken over by User.value()
 * Restructured login and register functionalities in User and MemberMgr
 * Replaced first occurrences of Exception with Error
 * Introduced i18n via gettext in User and MemberMgr
 * Removed getMessage() and Message in User and MemberMgr
 * Added first possible implementation of global getPermission() method
 * Modified code of global evalEmail() and evalURL() methods to work with Helma modules
 * Simplified global sendMail() method by not throwing any MailException anymore and returning the status code only
 * sendMail() now is using helma.Mail (so we can debug message output)

code/Metadata/Metadata.js

@@ -98,6 +98,10 @@ Metadata.prototype.getData = function() {
  */
 Metadata.prototype.set = function(key, value) {
    if (arguments.length > 1) {
+      // Coerce Java classes into String prototypes
+      if (!value.constructor) {
+         value = String(value);
+      }
       this.get()[key] = value;
    } else if (arguments.length > 0) {
       value = arguments[0];