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-5660] ScaleRatioDecoration attributes for enable/disable transparency, patch initially contributed by Francisco Ernesto Teixeira
[GEOS-5530] GML2-GZIP - Wrong MIME type?
[GEOS-5530] GML2-GZIP - Wrong MIME type?
GEOS5672: fixed nested group loop
Merge pull request #170 from svzdvd/GEOS5672-selfreferentialgroup

GEOS-5672: fixed nested group loop
GOS-5682, Fix WCS20 ScaleToExtent and ScaleToSize operations
Merge pull request #171 from simboss/wcs20-master

GEOS-5682, Fix WCS20 ScaleToExtent and ScaleToSize operations
Revert "GEOS5672: fixed nested group loop" to fix the build

This reverts commit 03c5c87de570337a27238a5c4bb44a232752a237.
[GEOS-5507] Explain how to upload a style to a workspace, and how to assign that style to a layer in the same workspace
Merge pull request #172 from landryb/GEOS-5507-doc

[GEOS-5507] Explain how to upload a style to a workspace, and how to ass...
GEOS5672: fixed nested group loop
Merge pull request #174 from svzdvd/GEOS5672-selfreferentialgroup2

GEOS-5672: fixed nested group loop
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-5691] WCS 2.0 DescribeCoverage fails against image mosaic layers, and [GEOS-5690] WCS 2.0 GET DescribeCoverage fails against a list of coverageIds