First vesion of kmf-repository-api as described in issue_1704

Change-Id: I9be65171da793370abdb4cd6ca5fca7730d7e6dc
Bug fixes in ItemsMetadata

Change-Id: I436bde2923fcce11e893e694459575a6ed9bf1ec
Improve JavaDoc and put license headers

Change-Id: Ib851aafd32b6b3ee4d5ba7f8954b805605b250e9
Modifications in pom for release plugin and maven central publication

Change-Id: I5b6612bd60779faaf5587ac437e71cfab285e82e
[maven-release-plugin] prepare release kmf-repository-api-3.0.5

Change-Id: Icf019ba5d397f877b32bc0c9eba856925c334bf9