Merge branch 'feat/dmnapp' into 'develop'

...e/dmn/verification/verifier/impl/SubsumptionVerifier.java

...ifierapi/src/main/resources/META-INF/resources/index.html

dmnverifierfrontend/README.md

...va/de/unikoblenz/fgbks/dmn/frontend/AppLifecycleBean.java

...ain/java/de/unikoblenz/fgbks/dmn/frontend/HttpFilter.java

...n/resources/META-INF/resources/assets/css/select2.min.css

...esources/META-INF/resources/assets/js/select2.full.min.js

...src/main/resources/META-INF/resources/css/stylesheets.css

...frontend/src/main/resources/META-INF/resources/index.html

...d/src/main/resources/META-INF/resources/js/dmnDownload.js

...src/main/resources/META-INF/resources/js/dmnUpDownload.js

...d/src/main/resources/META-INF/resources/js/dmnVerifier.js