optimized translation loading (Pimcore_Translate) ->loadRaw()

git-svn-id: http://www.pimcore.org/svn/pimcore/private/core/trunk@3441 1f8fe7d8-47f0-464c-8d0a-336f4953ab05
fixed version handling for modification user

git-svn-id: http://www.pimcore.org/svn/pimcore/private/core/trunk@3442 1f8fe7d8-47f0-464c-8d0a-336f4953ab05
translations (website/admin) improvements: caching on language basis, disable cache if more than 5000 items in db, reuse translator in admin translation helper

git-svn-id: http://www.pimcore.org/svn/pimcore/private/core/trunk@3443 1f8fe7d8-47f0-464c-8d0a-336f4953ab05
build auto version (2851) ...

git-svn-id: http://www.pimcore.org/svn/pimcore/private/core/trunk@3444 1f8fe7d8-47f0-464c-8d0a-336f4953ab05