added printer and exporter functionalities

git-svn-id: svn://svn.forge.objectweb.org/svnroot/spagobi/V_4.x/Server/trunk@20950 99afaf0d-6903-0410-885a-c66a8bbb5f81
Removed content of WEB-INF/classes folder

git-svn-id: svn://svn.forge.objectweb.org/svnroot/spagobi/V_4.x/Server/trunk@20953 99afaf0d-6903-0410-885a-c66a8bbb5f81
resolved bug SPAGOBI-983

git-svn-id: svn://svn.forge.objectweb.org/svnroot/spagobi/V_4.x/Server/trunk@20954 99afaf0d-6903-0410-885a-c66a8bbb5f81