* origin/develop: (56 commits)
  Add advanced setting to enable editing nonce on confirmation screens (MetaMask#7089)
  Add migration on 3box imports and remove feature flag (MetaMask#7209)
  ci - install deps - limit install scripts to whitelist (MetaMask#7208)
  Add a/b test for full screen transaction confirmations (MetaMask#7162)
  Update minimum Firefox verison to 56.0 (MetaMask#7213)
  mesh-testing - submit infura rpc requests to mesh-testing container (MetaMask#7031)
  obs-store/local-store should upgrade webextension error to real error (MetaMask#7207)
  sesify-viz - bump dep for visualization enhancement (MetaMask#7175)
  address book entries by chainId (MetaMask#7205)
  Optimize images only during production build (MetaMask#7194)
  Use common test build during CI (MetaMask#7196)
  Report missing `en` locale messages to Sentry (MetaMask#7197)
  Verify locales on CI (MetaMask#7199)
  updated ganache and addons-linter (MetaMask#7204)
  fixup! add user rejected errors
  add user rejected errors
  update json-rpc-engine
  use eth-json-rpc-errors
  Remove unused locale messages (MetaMask#7190)
  Remove unused components (MetaMask#7191)
  ...