CMS-1752 Create SaveChangesBeforeCloseDialog for wizard
Replaced DeckPanel usage of "global event" for notifying shown-panel-changed to "local event".
Added method BrowsePanel.refreshGrid which again calls grid.refresh()
Added support for successCallback function in WizardPanel.saveChanges, so that refresh of grid after saving is actually done after entity is saved.
CMS-1929 Create extension of AppPanel for browse and wizard based apps