added textentities as entities, added ui view

...src/main/java/de/vipra/rest/resource/ArticleResource.java

.../main/java/de/vipra/rest/resource/TextEntityResource.java

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

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

...md/src/main/java/de/vipra/cmd/text/SpotlightResponse.java

vipra-ui/app/html/articles/index.html

vipra-ui/app/html/articles/show.html

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

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

vipra-ui/app/html/directives/entity-menu.html

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

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

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

vipra-ui/app/html/entities/articles.html

vipra-ui/app/html/entities/index.html

vipra-ui/app/html/index.html

vipra-ui/app/html/topics/index.html

vipra-ui/app/html/topics/show.html

vipra-ui/app/html/words/index.html

vipra-ui/app/html/words/topics.html