Fix concurrent modification error on shutdown.
Merge pull request #116 from dybdahl/master

Fix concurrent modification error on shutdown.
Updating versions for jersey and netty
Removed internal dependency versions from here, replaced with project version. Less places to remember to update.
Upped timout value for archivertest, as it never runs within time on my laptop... And sometimes failes on Jenkins.
Added proto folder to protobuf generation.

 Some IDEs sometimes has trouble reading and importing directly from generated-sources.
Added WriteReport as return by Slot.write.
 - This will enable SimpleArchiver to write metadata files.
 - Other Archiver plugins might also be able to utilize this in the future.
Added finals, organized imports and simplified a few statements.
Added MetadataHandler for use with replay.
Removed setters in WriteReport and added those values in the constructor.
Fixes. * Sorry for lack of comment, I lost track of it all...