broken links for tor / onion services in footer

[mfc]

hi all,

the footers added via this merge create a url based on the currently viewed page, so if someone clicks the link outside of the main page it will be broken.

for example, if the user is on the following page:
https://riseup.net/en/email/settings

the footer links created are:
https://riseup.net/en/email/settings/security/network-security/tor#riseups-tor-onion-services

and
https://riseup.net/en/email/settings/email/settings/tor

(notice the addition of the page where you are visiting from to the url, which breaks the links.)

this could be solved by having the links in the footer be direct links rather than relative links.