Promoted printing module from community to extension and updated mapfish print-lib version to 2.0.0
fix jetty log versions and deps
[GEOS-6383] Allow admin to specify selection strategy for the WMS dimensions default values
Use GeoTools NearestVisitor
Added section 'Edit dimensions' in the user guide under webadmin/data/layers
[GEOS-6410] LookAt value in SimpleNetworkLinkBuilder not set correctly, and [GEOS-6411] Time and elevation parameter is not passed in KML export
Merge pull request #557 from mbarto/printing_extension

Promoted printing module from community to extension and updated mapfish print-lib version to 2.0.0
Merge pull request #558 from ccancellieri/master-mixing-log-versions

fix jetty log versions and deps
Resource addListener / removeListener with Await test support class

First cut at features events
Directory tests
Factor out Await test support class
resource addListener / removeListener
Clean up remaining tests
TestCase for Content and Content.Read
Remove Content interface
Revise based on feedback