Add symbol, pattern, tspan, textPath to whitelist.  Also added some attributes missing in whitelist to other elements
Add symbol, pattern, tspan, textPath to whitelist.  Also added some attributes missing in whitelist to other elements

git-svn-id: e52e7dec99011c9686d89c3d3c01e7ff0d333eee@1329 eee81c28-f429-11dd-99c0-75d572ba1ddd

cagataygoncu/svg-edit-gravvitas,soranchu/svg-edit,nilclass/svg-edit,nilclass/svg-edit,cagataygoncu/svg-edit-gravvitas,cagataygoncu/svg-edit-gravvitas,soranchu/svg-edit,nilclass/svg-edit,soranchu/svg-edit