. Improvements to portlet session handling in Login/Logout situations

- Storing of "inPortal" flag in a Threadlocal
 - No longer invalidate portlet session on logout - clear session by hand instead
   - Makes it easier to integrate with other JSR-168 vendors such as Liferay
. Added the current template NodeRef to the default templating model
   - Accessable as an object in the root of the templating model called "template"
. Added the current script NodeRef to the default scripting model
   - Accessable as a root scope object called "script"

git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@2934 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261

source/java/org/alfresco/web/app/Application.java

@@ -62,7 +62,7 @@ public class Application
    
    public static final String MESSAGE_BUNDLE = "alfresco.messages.webclient";
    
-   private static boolean inPortalServer = false;
+   private static ThreadLocal<Boolean> inPortalServer = new ThreadLocal<Boolean>();
    private static StoreRef repoStoreRef;
    private static String rootPath;
    private static String companyRootId;
@@ -87,7 +87,7 @@ public class Application
     */
    public static void setInPortalServer(boolean inPortal)
    {
-      inPortalServer = inPortal;
+      inPortalServer.set(inPortal);
    }
    
    /**
@@ -97,7 +97,7 @@ public class Application
     */
    public static boolean inPortalServer()
    {
-      return inPortalServer;
+      return (inPortalServer.get() != null ? inPortalServer.get() : false);
    }
    
    /**