- move the user home for last - adjust how "up" works - include the user name in the "home" link

This adds a simple navigation bar since web browser are apparently dumbler than most Gemini browsers. The "Root" link points to the capsule' root, "Home" to the current home directory and "Up" to the parent directory. Users home are discovered using a simple heuristics: ~user path components.

now we pass the correct url from proxy.c

it happens when there's an error or we don't have a match for the proxy.

the '\0' check doesn't seem to be correctly translated

a space is mandatory between the tag and the attribute, but the template compiler trims it out. Use {{ " " }} as a workaround.