Custom menu (#901)

* added way to customize menu

* fixed unit mock test

* updated release notes

* updated release notes

* default none exclude

webgoat-container/src/main/resources/application-webgoat.properties

@@ -50,3 +50,9 @@ spring.jackson.serialization.write-dates-as-timestamps=false
 
 #For static file refresh ... and faster dev :D
 spring.devtools.restart.additional-paths=webgoat-container/src/main/resources/static/js,webgoat-container/src/main/resources/static/css
+
+exclude.categories=${EXCLUDE_CATEGORIES:none,none}
+#exclude based on the enum of the Category
+
+exclude.lessons=${EXCLUDE_LESSONS:none,none}
+#exclude based on the class name of a lesson e.g.: LessonTemplate