removed entity types, fixed css issues

vipra-cmd/src/main/java/de/vipra/cmd/file/Filebase.java

...d/src/main/java/de/vipra/cmd/option/EditModelCommand.java

...-cmd/src/main/java/de/vipra/cmd/option/ImportCommand.java

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

vipra-ui/app/html/directives/article-link.html

vipra-ui/app/html/directives/topic-link.html

vipra-ui/app/js/directives.js

vipra-ui/app/less/app.less

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

...-util/src/main/java/de/vipra/util/model/SequenceWord.java

...l/src/main/java/de/vipra/util/model/TopicModelConfig.java