Romulo:

Romulo:
- Finally solved bug 243 (moving linked images)
  + when propagating,  vvMainWindow::UpdateLinkedNavigation was always using slicer[0] as the reference. Now, the reference vvSlicer
 is passed as an argument from vvSlicerManager::UpdateLinkedNavigation.

- More corrections wrt bug 283 - cursor rendering... (accidentally removed from the bug tracker)
  + better treatment of cursor rendering when images are linked
  + there are still corrections to be made wrt to the corner annotations.