login screen: focus on username input

git-svn-id: http://www.pimcore.org/svn/pimcore/private/core/trunk@3278 1f8fe7d8-47f0-464c-8d0a-336f4953ab05
localized fields fallback language: lower priority than inheritance

git-svn-id: http://www.pimcore.org/svn/pimcore/private/core/trunk@3279 1f8fe7d8-47f0-464c-8d0a-336f4953ab05
build auto version (2806) ...

git-svn-id: http://www.pimcore.org/svn/pimcore/private/core/trunk@3280 1f8fe7d8-47f0-464c-8d0a-336f4953ab05