@MetalBird
you are right, that link is broken, we fixed it some weeks ago, but the fix will be available on staging with the next release. Sorry about that.
@roboticage
'Move to...' options are disabled until you create some folders in which you can move the files into.
Thank you for finding the bug about the last line visualization in the editor, we'll fix that as soon as possible!
About tabs management, we're still working on it, we know there is a lot to improve there 