[workflow] finish refactoring introduced by 021035b9a7ab for 'go back' transition: * fix SubWorkflowTransition.destination() prototype (must now take an entity as argument) * fix the change state for to give the entity to the transition's destination() method * we need a new method to draw workflow since we've no entity to give and 'go back' transition usually go back to multiple states

/* specific workarounds for Internet Explorer */
div.calpopup {
  margin-left: 0px;
  margin-top: 0px;
}

/* quick and dirty solution for pop to be 
   correctly displayed on right edge of window */
div.popupWrapper{ 
  direction:rtl;
}