generalized util services

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

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

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

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

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

...t/src/main/java/de/vipra/rest/service/ArticleService.java

...til/src/main/java/de/vipra/util/ex/DatabaseException.java

...til/src/main/java/de/vipra/util/ex/FilebaseException.java

.../src/main/java/de/vipra/util/service/DatabaseService.java

.../src/main/java/de/vipra/util/service/FilebaseService.java

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