Update REST docs to match changes in GEOS-5512.
Merge pull request #303 from rcoup/rest-doc-fixes-2.4

Update REST docs to match changes in GEOS-5512. (2.4.x)
changing extension to .gpkg, as per spec recommendation
Merge pull request #300 from NielsCharlier/2.4.x

GSIP 98: Move CSW from community to extensions
Make sure CSW is built by hudson during normal builds (not just nightlies)
[GEOS-5987] DescribeRecord xsi:schemaLocation lacks a / just before CSW-discovery.xsd
[GEOS-5369] CSW GetRecordById will NPE in case there are multiple record types available
Remove debugging code that breaks the build on windows
[GEOS-5689] Reloading configuration with workspace specific settings results in exception
fixed contrary meaning of i18 property
Test for GEOT-4550: WMS app-schema with reprojection returns blank image
fixed Signed/Unsigned label for css module
updated and fixed German Translations
updated Korean translation taken from Transifex (Thanks to mapplus)
added Dutch translations (extensions/community) and updated web
added/updated complete Spanish translations (Thanks to Jorge Sanz)
[GEOS-5985] Tomcat with APR can result in full JVM crashes
GEOS-6000 LRUAuthenticationCacheImpl TimerTask causes deadlock
Update CSS library to 0.8.3
GEOS-5997 Basic authentication filter message digest is not thread safe