Save recent network balances in local storage (#5843)

* Use selector for state.metamask.accounts in all cases.

* Default to cached balance when selecting metamask accounts

* Adds the cached-balances controller

* Documentation and small codes fixes for #5843

Co-Authored-By: danjm <danjm.com@gmail.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/ui/app/components/account-menu/index.js b/ui/app/components/account-menu/index.js
index 94eae8d07..e88389096 100644
--- a/ui/app/components/account-menu/index.js
+++ b/ui/app/components/account-menu/index.js
@@ -13,6 +13,7 @@ const Tooltip = require('../tooltip')
 import Identicon from '../identicon'
 import UserPreferencedCurrencyDisplay from '../user-preferenced-currency-display'
 import { PRIMARY } from '../../constants/common'
+import { getMetaMaskAccounts } from '../../selectors'
 
 const {
   SETTINGS_ROUTE,
@@ -41,7 +42,7 @@ function mapStateToProps (state) {
     isAccountMenuOpen: state.metamask.isAccountMenuOpen,
     keyrings: state.metamask.keyrings,
     identities: state.metamask.identities,
-    accounts: state.metamask.accounts,
+    accounts: getMetaMaskAccounts(state),
   }
 }