update fee levels in reducer only if needed

public/data/appConfig.json

@@ -106,8 +106,7 @@
                 "minFee": "10",
                 "maxFee": "10000",
                 "levels": [
-                    {"name": "High", "value": "20" },
-                    {"name": "Normal", "value": "10", "recommended": true }
+                    {"name": "Normal", "value": "12", "recommended": true }
                 ]
             },
             "explorer": {

src/actions/ripple/BlockchainActions.js

@@ -5,6 +5,7 @@ import * as BLOCKCHAIN from 'actions/constants/blockchain';
 import * as PENDING from 'actions/constants/pendingTx';
 import * as AccountsActions from 'actions/AccountsActions';
 import { toDecimalAmount } from 'utils/formatUtils';
+import { observeChanges } from 'reducers/utils';
 
 import type { BlockchainNotification } from 'trezor-connect';
 import type {
@@ -48,7 +49,8 @@ export const onBlockMined = (network: string): PromiseAction<void> => async (dis
         const feeRequest = await TrezorConnect.blockchainEstimateFee({
             coin: network,
         });
-        if (feeRequest.success) {
+        if (feeRequest.success && observeChanges(blockchain.feeLevels, feeRequest.payload)) {
+            // check if downloaded fee levels are different
             dispatch({
                 type: BLOCKCHAIN.UPDATE_FEE,
                 shortcut: network,

src/reducers/utils/index.js

@@ -115,7 +115,7 @@ export const getWeb3 = (state: State): ?Web3Instance => {
     return state.web3.find(w3 => w3.network === locationState.network);
 };
 
-export const observeChanges = (prev: ?Object, current: ?Object, filter?: {[k: string]: Array<string>}): boolean => {
+export const observeChanges = (prev: ?any, current: ?any, filter?: {[k: string]: Array<string>}): boolean => {
     // 1. both objects are the same (solves simple types like string, boolean and number)
     if (prev === current) return false;
     // 2. one of the objects is null/undefined