Feature: #99191 - Create folders via modals

See forge#99191


The creation of new folders in the File > Filelist module has been improved. Instead of a new window, the Create Folder button now opens a modal window to create a folder. Both the button in the docheader and the corresponding option in the context menu are affected.

The modal window also contains the folder tree to select the parent folder. To allow editors creating folders sequentially, the modal is not automatically closed.


With the new modal window, backend users are able to create folders in an improved way: They do not lose focus of the current view anymore. Additionally, the parent folder can easily be changed inside the modal window, which allows to create folders for different levels without leaving the form. After closing the modal window, the File > Filelist module automatically reloads to instantly display the latest changes.