made more config options available to ModelConfig

...nd/src/main/java/de/vipra/rest/resource/InfoResource.java

vipra-cmd/src/main/java/de/vipra/cmd/Main.java

vipra-cmd/src/main/java/de/vipra/cmd/lda/Analyzer.java

...src/main/java/de/vipra/cmd/option/CreateModelCommand.java

vipra-cmd/src/main/resources/model.json

vipra-util/src/main/java/de/vipra/util/Config.java

vipra-util/src/main/java/de/vipra/util/Constants.java

vipra-util/src/main/java/de/vipra/util/ModelConfig.java