On file/folder creation show error if file with that name already exists
Followup of #24 (closed), which lists alot of already fixed stuff.
Like for "rename", creating a new/file folder should just fail, if the name is already taken.
Followup of #24 (closed), which lists alot of already fixed stuff.
Like for "rename", creating a new/file folder should just fail, if the name is already taken.