Let specify draw options when dtop item
Let specify draw options when dtop item

Now one can use more complex URLs syntax 

   item=histo1+histo2&opt=hist+e1

This works until draw option itself contains plus sign.
Need to be improved

root-project/jsroot,root-project/jsroot,linev/jsroot,bellenot/jsroot,bellenot/jsroot,bellenot/jsroot,linev/jsroot