tests(signin): make cached credential tests more stable
Merge pull request #1636 from mozilla/improve-cached-creds-functional-tests

tests(signin): make cached credential tests more stable
Revert "tests(signin): make cached credential tests more stable"
Merge pull request #1638 from mozilla/revert-1636-improve-cached-creds-functional-tests

Revert "tests(signin): make cached credential tests more stable"
Merge pull request #1641 from mozilla/improve-cached-creds-functional-tests-2

tests(signin): make cached credential tests more stable
fix(avatars): disable remote URL option
fix(avatars): integrate profile server backend for profile images