Stop hardcoding a list of public proxies
Stop hardcoding a list of public proxies

They should now get fetched through proxies.telepathy.im. This allow us a more
flexible control on the proxies used.

jku/telepathy-gabble,Ziemin/telepathy-gabble,jku/telepathy-gabble,mlundblad/telepathy-gabble,mlundblad/telepathy-gabble,Ziemin/telepathy-gabble,Ziemin/telepathy-gabble,mlundblad/telepathy-gabble,Ziemin/telepathy-gabble,jku/telepathy-gabble