A few new options, applied to backend users and backend user groups (through UserTS) give administrators more control over files.
options.fileTree.uploadFieldsInLinkBrowser
Configures the number of upload fields in the linkbrowser. Default value is 3, but can be set to 0 to forbit uploading through the linkbrowser at all.
options.fileTree.denyCreateFolder
If set to 1, creation of new folders is forbidden.
More info:
RFC: #8899: [feature] Configuration of uploads and create folder in linkbrowser
http://bugs.typo3.org/view.php?id=8899