Moved release plugin to root project.
Moved release plugin to root project.


Former-commit-id: e5495928da60c309d2d8397ef39a779a7e3def9b
kermitt2/grobid,kermitt2/grobid,kermitt2/grobid,kermitt2/grobid,kermitt2/grobid,kermitt2/grobid