GEOS-6080: added standard RoleSource support (Header, RoleService, UserGroupService) to J2EEAuthenticationFilter
using write creds for firing off jenkins installer jobs
GEOS-6080: added more docs to MigrationHelper
Updated release guide with Jenkins changes and small reordering and content fixes
[GEOS-6083] Wrong character encoding, and [GEOS-6079] Saving styles from the Admin UI use the wrong encoding on some systems
Merge pull request #366 from mbarto/geos6080_j2eefilter_roleservice_2

GEOS-6080: added standard RoleSource support (Header, RoleService, UserGroupService) to J2EEAuthenticationFilter
Merge branch 'master' of https://github.com/geoserver/geoserver into rest-emptymosaic