ignore mapping failures

git-svn-id: http://www.pimcore.org/svn/pimcore/private/core/trunk@3094 1f8fe7d8-47f0-464c-8d0a-336f4953ab05
object wysiwyg: removed IE8 compatibility -> cleaner

git-svn-id: http://www.pimcore.org/svn/pimcore/private/core/trunk@3095 1f8fe7d8-47f0-464c-8d0a-336f4953ab05
tree-previews: put them into an iframe, so that all the request can be stopped (window.stop) otherwise when hovering around there can be very much open connections in the browser -> blocks new requests

git-svn-id: http://www.pimcore.org/svn/pimcore/private/core/trunk@3096 1f8fe7d8-47f0-464c-8d0a-336f4953ab05
ghostscript PDF conversion: whate background 4 png

git-svn-id: http://www.pimcore.org/svn/pimcore/private/core/trunk@3097 1f8fe7d8-47f0-464c-8d0a-336f4953ab05
local alternative for google docs viewer and PDF

git-svn-id: http://www.pimcore.org/svn/pimcore/private/core/trunk@3098 1f8fe7d8-47f0-464c-8d0a-336f4953ab05
build auto version ...

git-svn-id: http://www.pimcore.org/svn/pimcore/private/core/trunk@3099 1f8fe7d8-47f0-464c-8d0a-336f4953ab05