Removed @Consumes annotation from ItemChannelLinkResource and changed POST to PUT for adding a link.

Signed-off-by: Dennis Nobel <d.nobel@external.telekom.de>
Using LinkedHashSet instead of HashSet to preserve order in BindingInfoRegistry.

Signed-off-by: Dennis Nobel <d.nobel@external.telekom.de>
Merge pull request #108 from dnobel/minor-rest-fixes

Minor REST fixes