Add description to Reset Account in settings (#7686)

* Add description to Reset Account in settings
* Update description copy

app/_locales/en/messages.json

@@ -1043,7 +1043,7 @@
     "message": "Reset Account"
   },
   "resetAccountDescription": {
-    "message": "Resetting your account will clear your transaction history."
+    "message": "Resetting your account will clear your transaction history. This will not change the balances in your accounts or require you to re-enter your seed phrase."
   },
   "deleteNetwork": {
     "message": "Delete Network?"

ui/app/pages/settings/advanced-tab/advanced-tab.component.js

@@ -108,6 +108,9 @@ export default class AdvancedTab extends PureComponent {
       <div className="settings-page__content-row">
         <div className="settings-page__content-item">
           <span>{ t('resetAccount') }</span>
+          <span className="settings-page__content-description">
+            { t('resetAccountDescription') }
+          </span>
         </div>
         <div className="settings-page__content-item">
           <div className="settings-page__content-item-col">