Bug 1017759: re-land ProxxyMixin with some improvements to retry behaviour r=jlund
Bug 1017759 - AWS region-local caches - rms proxxy from being used with GaiaTest by default, r=catlee
Bug 1045488 - esr31 branch on https://github.com/mozilla/gecko-dev,r=hwine
merge default -> production

--HG--
branch : production