Changes

Summary

1. Migration from AppView (add-on view) to Vaadin App layout (#272) (details)

Commit 9bcfd15dacaff00b91054fe4f0475e092231c91a by GitHub Migration from AppView (add-on view) to Vaadin App layout (#272) Fix #269
	src/main/java/eu/yals/ui/DebugView.java (diff)
	src/main/java/eu/yals/ui/err/AppDownView.java (diff)
	src/main/java/eu/yals/ui/AppView.java
	frontend/css/main_view.css
	src/main/java/eu/yals/ui/MainView.java
	src/main/java/eu/yals/ui/err/PageNotFoundView.java (diff)
	src/main/java/eu/yals/ui/err/IdentNotFoundView.java (diff)
	src/main/java/eu/yals/ui/err/ServerErrorLoopView.java (diff)
	src/main/java/eu/yals/ui/HomeView.java (diff)
	src/main/java/eu/yals/ui/dev/AppInfoView.java (diff)
	src/main/java/eu/yals/ui/err/ServerErrorView.java (diff)
	pom.xml (diff)