added counts to topicmodel, added _all fields selector

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

vipra-ui/app/index.html

vipra-ui/app/js/controllers.js

...til/src/main/java/de/vipra/util/model/TopicModelFull.java

...til/src/main/java/de/vipra/util/service/MongoService.java

vipra-util/src/main/java/de/vipra/util/service/Service.java