plug in the url manglers with gwc's hook

GWC now has a hook for altering the urls that it generates. This plugs
into that hook, and delegates to the geoserver response utils chain,
which calls all the geoserver pluggable extensions.
added WMS and WMTS support for URL mangling
Fix for URL mangling base paths, and adding WMS and WMTS mangling
Add GeoScript to the Groovy Script module
Add license headers
Fix failing test
replaced hardcoded geoserver version number.
GEOT-4358: added style test for isCoverage filter function
Added support for LayerGroup to the WMS GetLegendGraphic action
import geoscript's geometry class
wfs capability extension point

Added an extension point for adding wfs capability extension elements
Added wfs inspire extension which demonstrates the use of said extension point.
Work is financed by IGN
added groovy and javascript script modules to nightly community builds
fixed some bugs and added forceTitles legend option
Fixed typo in User Guide Rendering Transformation section
[GEOS-5539] Support raster custom dimensions generated at runtime
Fixed version number reference to follow the project convention.
Add Web 3D Service as a community module.
Add group.id to w3ds pom. Add w3ds as a profile in web app.
Improving range subsettting code and coverage response delegate class
Make WCS 2.0 work against both lon/lat and lat/lon oriented coverages