Improved the special NULL handling code for WDDX processing. Learning design DTOs now use the convertToBlah utilities in WDDXProcessor. Also covers changes made by Mai recently.
Changed authoring storeLearningDesignDetails and storeTheme to use standalone servlets. The struts actions can't take the WDDX packet from Flash as a POST body. Also updated DOLLY to 4.0.2 so updated all the core project jars.