* 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/Layout/type.properties

@@ -39,7 +39,7 @@ skins    = mountpoint(SkinMgr)
 images   = mountpoint(ImageMgr)
 
 preferences       = mountpoint(Metadata)
-preferences_data  = LAYOUT_PREFERENCES_NEW
+preferences_source  = LAYOUT_PREFERENCES_NEW
 
 site           = object(Site)
 site.local     = LAYOUT_F_SITE
@@ -51,11 +51,11 @@ parent.foreign = LAYOUT_ID
 
 creator           = object(User)
 creator.local     = LAYOUT_F_USER_CREATOR
-creator.foreign   = USER_ID
+creator.foreign   = id
 
 modifier          = object(User)
 modifier.local    = LAYOUT_F_USER_MODIFIER
-modifier.foreign  = USER_ID
+modifier.foreign  = id
 
 sharedBy          = collection(Layout)
 sharedBy.local    = LAYOUT_ID