[GEOS-5482] GetLegendGraphic does not work for styles with rendering Transformation
GEOS-5549: fixed up/down arrows in LayerGroups UI
 GEOS-5549: fixed up/down arrows in LayerGroups UI, follow up to fix annoying extra issues (arrows on all the time, visual alternation broken, error messages on the console
[GEOS-5530] GML2-GZIP - Wrong MIME type?
GEOS-5682, Fix WCS20 ScaleToExtent and ScaleToSize operations
Merge pull request #175 from simboss/wcs20-2.3.x

GEOS-5682, Fix WCS20 ScaleToExtent and ScaleToSize operations
GEOS5672: fixed nested group loop
Merge pull request #176 from svzdvd/2.3.x-GEOS5672-selfreferentialgroup3

GEOS-5672: fixed nested group loop
cache-control headers in integrated wms, GEOS-5686

- cleanup interceptor, add max-age header from layer metadata if
  declared
- add test

Conflicts:

	src/gwc/src/test/java/org/geoserver/gwc/GWCIntegrationTest.java
[GEOS-5691] WCS 2.0 DescribeCoverage fails against image mosaic layers, and [GEOS-5690] WCS 2.0 GET DescribeCoverage fails against a list of coverageIds
[GEOS-5696] WCS services need to declare their namespace
[GEOS-4761] AdvancedDispatchFilter throws NPE for additional non directory servlet mappings
Applying GEOS-5549 to security filter chains
GEOS-5678 Improve logging in geoserver.security
libjpeg-turbo encoding support
Merge pull request #180 from simboss/2.3.x-libjpeg-turbo

GEOS-5700, libjpeg-turbo WMS Encoder as Community Module
adding libjpeg to the nightly deploys
Merge pull request #184 from simboss/libjpeg-2.3.x

GEOS-5702, adding libjpeg to the nightly deploys
[GEOS-5705] Enabled and advertised flags in the resource will get out of synch with the LayerInfo ones right after GUI editing
GEOS-5711 org.geoserver.security.decorators.DecoratingWMSLayerInfo prefixName method calls itself indefinitely