merge good "Spruce up the index page" from kousu
Note that this depends on jmp-fwdcall's d72ce27 because of this commit's promise to require "an existing Canadian or US phone number" only "If you want to enable incoming voice calls" (rather than all the time as was the case before). There will be a follow-up commit that updates the registration pages to make this true as well. See merge request !1 for the discussion and details behind this merge.
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