Browser:clearweb-urls on Linux.Mint18.1 spawn a Firefox process but that doesn't see Firefox present - only if Firefox is already open do those links work. The Web Hosting manager:Help links do work.
Hosting Manager: Uploading on top an existing file gives - ~"Core error content already exists.." or some message like that which disappears too quick and without instead an option to overwrite[=> delete and upload that file].
and a few observations:
Authenticator: detailing all permissions being requested is too much information, and worrisome; by default the request should be simple - "do you trust/are you expecting, this app?".. with an advanced option to barf the specifics.
Hosting manager: could do with having its title in the body, not just relying on the container title. Rather than just "Home", suggest Web Hosting Manager and a header for the list as Your PublicIDs or similar orientation hints.
Hosting manager:Help links could do with being on the page - menu help is a rare place people will explore. That said, the Browser has no [Help] where perhaps that should be there.
Unclear what affect Web Hosting manager:[Clear Access Data] has.
Hosting Manager: Navigation might be improved if the header was links.. so _public/hello/www-root saw hello jump up to top with hello expanded; and _public/ to the top with all minimised.
Browser:File:[Toggle SAFE browsing] perhaps is redundant.
Browser:History suggests no history and I wonder that kind of base capability will be expected in future.
One good improvement seems to be that refresh following an updated file, does work without need for some http cache header forcing that.