* added advanced menu...most users are not interested in the debug pane
* moved debug pane to advanced menu
* added clear-cookie button to advanced menu (fix for #551)
bumped version number, removed not used dimens entry
Status persistence of Layer Chooser: Change to save status on 'overlayadd' and 'overlayremove' events. Instead of checking .overlay everytime a layer is added or removed.
Merge pull request #555 from Xelio/patch-event-overlay-add-remove

Status persistence of Layer Chooser: Change to save status on 'overlayadd' and 'overlayremove' events. Instead of checking .overlay everytime a layer is added or removed.