I added the module magnolia-processed-resources-app version 1.02 and the app is visible
in the App Launcher. When I start the App i get a ClassNotFound error and it does not start.

The missing class is com.vaadin.ui.Table which indeed does not exist since Vaadin 8 was introduced in 5.6. It should probably be this one com.vaadin.v7.ui.Table (Vaadin 7 compatibility class)

Here the Stacktrace:
Caused by: java.lang.ClassNotFoundException: com.vaadin.ui.Table
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1720) ~[catalina.jar:7.0.55]
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1571) ~[catalina.jar:7.0.55]
at java.lang.Class.getDeclaredMethods0(Native Method) ~[?:1.8.0_121]
at java.lang.Class.privateGetDeclaredMethods(Class.java:2701) ~[?:1.8.0_121]
at java.lang.Class.getDeclaredMethods(Class.java:1975) ~[?:1.8.0_121]
at com.google.inject.spi.InjectionPoint.getInjectionPoints(InjectionPoint.java:688) ~[guice-4.0.jar:?]
at com.google.inject.spi.InjectionPoint.forInstanceMethodsAndFields(InjectionPoint.java:380) ~[guice-4.0.jar:?]
at com.google.inject.internal.MembersInjectorStore.createWithListeners(MembersInjectorStore.java:93) ~[guice-4.0.jar:?]
at com.google.inject.internal.MembersInjectorStore.access$000(MembersInjectorStore.java:37) ~[guice-4.0.jar:?]
at com.google.inject.internal.MembersInjectorStore$1.create(MembersInjectorStore.java:45) ~[guice-4.0.jar:?]
at com.google.inject.internal.MembersInjectorStore$1.create(MembersInjectorStore.java:42) ~[guice-4.0.jar:?]
at com.google.inject.internal.FailableCache$1.load(FailableCache.java:37) ~[guice-4.0.jar:?]