editable combobox for properties and values

git-svn-id: svn://svn.forge.objectweb.org/svnroot/spagobi/V_4.x/Server/trunk@20482 99afaf0d-6903-0410-885a-c66a8bbb5f81
CLOSED - issue SPAGOBI-1278: IE bug: Qbe / Worksheet designers are not displayed 
https://www.spagoworld.org/jira/browse/SPAGOBI-1278

git-svn-id: svn://svn.forge.objectweb.org/svnroot/spagobi/V_4.x/Server/trunk@20483 99afaf0d-6903-0410-885a-c66a8bbb5f81