[GEOS-5840] Changing the default style of a layer won't cause truncation of the tile caches for layer groups containing the layer, and, [GEOS-4760] Make GWC tile layers use the GeoServer layer's http caching settings
Merge pull request #247 from aaime/fix_gwc_caching

[GEOS-5840]  and [GEOS-4760]
[GEOS-5818] WMS 1.3 cascading broken after GEOT-4283 changes
GEOS-5820 Disabling security does not work as expected
Merge pull request #246 from aaime/geos-5818

[GEOS-5818] WMS 1.3 cascading broken after GEOT-4283 changes
GEOS-5824 http://..../geoserver matches wrong security filter chain
Complete Java port of CSS extension code
GEOS-5760 Documentation not referrencing Xms correctly
Merge remote-tracking branch 'upstream/master'