Instead of dropping additional links in the presentation layer, iterate
over all links in the parsing layer and add each link individually.
Some MTAs wrap the links in angle brackets (<>), so make sure to remove
those, since they wouldn't parse as valid XHTML (and also aren't valid
link targets).
Auth data needs only be processed once and is independent from the
actual route data.
This has the added benefit that auth data, which is entirely local, is
shown even if the API returned an error.
Currently, on error (rate limit, unable to reach Mailhops API), an error
message is shown and all additional information is bypassed.
This also means that the theme is not being applied.
Change the code to show local data even in error cases, and also apply
the theme option.
Actually, links containing a comma character are just multiple links,
the current code wants to fetch the first element and drop all others.
We'll change this at a later time, but for now, just fix the bug at
hand.
