[Cashtab] Move domain names for alias and token icons

Summary: etokens.cash domain will be used to host the new token-server API. I've moved the ssl over for these legacy endpoints so that bytesofman.com returns the same thing

Test Plan:
npm test, the most recent token icon was created using this locally
grep -r etokens.cash src/ and no output

Reviewers: #bitcoin_abc, PiRK

Reviewed By: #bitcoin_abc, PiRK

Differential Revision: https://reviews.bitcoinabc.org/D15675