GEOS-6152: fixed links in documentation pointing to gridlock site
Merge pull request #425 from mbarto/24x_fix_nightly_links

GEOS-6152: fixed links in documentation pointing to gridlock site
[GEOS-6215] workspace styles can only use images/graphics from global workspace
[GEOS-6201] Missing abstract definition of layer group in gwc integration
GEOS-6170, updating GeorectifyProcess to work without ant (and adding a test in the process).

- Using java ProcessBuilder api to call out to gdal
[GEOS-6247] KML points not extruding, patch by Victor Gonzalez
GEOS-5813: LDAP RoleService backporting to 2.4.x
Merge pull request #433 from mbarto/24x_geos_5813

GEOS-5813: LDAP RoleService backporting to 2.4.x
GEOS-6257, IE issues that arise when it excepts text/html
Merge branch '2.4.x' into suite-4.0.2

Conflicts:
	src/extension/wps/wps-core/src/main/java/org/geoserver/wps/gs/GeorectifyCoverage.java
GEOS-6285 - Omitting xml prefix from GetRecords response.

Fixes issues with parsing responses in IE.