[maven-release-plugin] copy for tag dnet-modular-repositories-ui-4.0.21
[maven-release-plugin] copy for tag dnet-modular-repositories-ui-4.0.20
[maven-release-plugin] copy for tag dnet-modular-repositories-ui-4.0.19
[maven-release-plugin] copy for tag dnet-modular-repositories-ui-4.0.18
[maven-release-plugin] copy for tag dnet-modular-repositories-ui-4.0.17
codebase used to migrate to java8 the production system