Updates to Client for compatibility with the next pithos+ server

Updates to Client for compatibility with the next pithos+ server
Updates to the versioning to accept minor changes for the update server (only for dev builds)
Changes to Installer to accommodate the new live install options
Changes to the installation procedure for the updates of the DB on the next couple of versions
Added the option to the installer to fetch all files from the online repo (not active in production yet)
Updates to OFM for better handling of the upload & download of objects.
Updated the release notes.
Updated version checking and re enabled all the autoupdated procedures.

Signed-off-by: George Pantazis <gpant@noc.grnet.gr>