Merge branch 'feature-11-notification-area' into shelve-long-process-validation
removed unnecessary method
removed buggy recheck method
all property widgets have now a propertyToWidget() method
Refactoring
rechecking is working now
removed unnecessary TODO note
property widgets are listening now to another signal
bugfix: a notification should be able to be viewn multiple times
all otifications have now only an ok button
parsing units iw working now
added an success message to the wait test
added validation result cache
added waiting notification
little fixes
Bugfix: now the Highlightwidgets knowns the right property widget to call the slot widgetToProperty()
bugfix
the waiting can now fail
added progress indicator
[NOT COMPILABLE] started refactoring longtime validation