fixed problem CSRF protection problem in adminer

git-svn-id: http://www.pimcore.org/svn/pimcore/private/core/trunk@3601 1f8fe7d8-47f0-464c-8d0a-336f4953ab05
bugfix recyclebin: exception if asset folder doesn't exist

git-svn-id: http://www.pimcore.org/svn/pimcore/private/core/trunk@3602 1f8fe7d8-47f0-464c-8d0a-336f4953ab05
tree preview: removed brocken/loading image indicator + added loading activity indicator

git-svn-id: http://www.pimcore.org/svn/pimcore/private/core/trunk@3603 1f8fe7d8-47f0-464c-8d0a-336f4953ab05
updated copyright

git-svn-id: http://www.pimcore.org/svn/pimcore/private/core/trunk@3604 1f8fe7d8-47f0-464c-8d0a-336f4953ab05
build auto version (2886) ...

git-svn-id: http://www.pimcore.org/svn/pimcore/private/core/trunk@3605 1f8fe7d8-47f0-464c-8d0a-336f4953ab05