remove FUNKWHALE_SPA_HTML_ROOT and FUNKWHALE_FRONTEND_PATH instead
hi,
the issue I had with YunoHost testing infrastructure using self-signed certificate was fixe with #705 (closed)
but, now that I implement it, I feel like two variables can easily be merged as one.
BTW, the release 1.18.2 isn't in https://dev.funkwhale.audio/funkwhale/funkwhale/releases and the variable FUNKWHALE_SPA_HTML_ROOT is not documented, neither in changelog or https://dev.funkwhale.audio/funkwhale/funkwhale/tags/0.18.2