[maven-release-plugin] prepare for next development iteration
Removed Maven related grunt tasks

Change-Id: I50daabd38f94fe86307943632812f6170e899ec1
Fixed packaging of jar artifact

Change-Id: Ib4ff0842dc1a21b2dd3910cd7c58c3a8c306e2a7
Package version updated to release version
[maven-release-plugin] prepare release kws-content-api-4.3.9