- GEOS-6275 GEOS-6276 Back Port from 2.5.x
[GEOS-5550] Top/Bottom statement on Layers Group
[GEOS-6410] LookAt value in SimpleNetworkLinkBuilder not set correctly, and [GEOS-6411] Time and elevation parameter is not passed in KML export
changed file to png
removed unicode dashes
removed unicode dashes
removed unicode dashes

Conflicts:
	doc/en/user/source/rest/examples/curl.rst
Merge pull request #461 from geoserver/24x_GEOS-6275-6276

 - GEOS-6275 GEOS-6276 Back Port from 2.5.x
Cumulative fix for

GEOS-6109 CAS login request exposes internal server URL
GEOS-6110 CAS logout request is incorrect
GEOS-6466, CSSDemoPage may create the sld file before a CatalogAddEvent is fired
Merge pull request #577 from geosolutions-it/2.4.x-up

GEOS-6466, CSSDemoPage may create the sld file before a CatalogAddEvent ...
make GWCIntegrationTest's set up repeated for each test. Otherwise it can fail on certain platforms
GEOS-6468: force eager creation of GWCLifeCycleHandler to avoid a shutdown failure that prevents datastores to be disposed
Upgrade GWC from 1.5.0 to 1.5.2
[GEOS-6471] GetFeatureWithLock expiry is not parsed when using WFS 1.1 POST requests
Merge pull request #580 from groldan/2.4.x_gwc_1.5.2

Upgrade gwc dependency to 1.5.2
[GEOS-6414] WMS-T time range query incorrect, patch by Chris Van Orman
Fix leaking connection when 'Return bounding box' is selected for WFS service

Backport of #593
Editing x509 tutorial
[GEOS-6503] WPS won't work with workspace specific urls, a 404 is returned, and also, [GEOS-6501] Links in workspace specific WPS GetCapabilities are incorrect