- workaround for lack of signals in legendInterface: update group info on
enterEvent()
- remove refresh button and alert the user if selection is outdated on play
(both are prob. not needed)
- fix canvas not redrawn in qgis 1.7.4 after thaw
- do not update canvas when main window is inactive or if the dock is hidden
- add forward button, which can invert the loop direction
- allow delay=0, only use forward and back buttons to show next item
- update UI
- change loop widget to a QWidget and nest into an ordinary QDockWidget, remove
"save location" stuff
