change context path like /lxd-dashboard

[hi-ko]

to make it easier to run lxd-dashboard on the same hostname / reverse proxy.
Is it possible to configure lxd-dashboard to run in a separate context path like /lxd-dashboard?

[matthewalanpenning]

Unfortunately, I have hardcoded the filepath, but this is a good idea and will add this to my list of things to update.