Fix for JERSEY-1835: Collections that contain 
       only a single item are not encoded correctly 
       in JSON using Jettison

 - added new test into e2e
 - introduced new config option in Jettison JSON Config Builder
 - documented the above option in user guide
 - fixed minor typo in media docs
 

Change-Id: I199fc9940ea3a88adf89e853e3e0daafd3b1f729
Signed-off-by: Jakub Podlesak <jakub.podlesak@oracle.com>
Merge "Fix for JERSEY-1835: Collections that contain         only a single item are not encoded correctly         in JSON using Jettison"