Create blockchainWatcher class and refactor Portal such that Ether amounts are always passed around as baseUnits

packages/website/ts/redux/dispatcher.ts

@@ -155,7 +155,7 @@ export class Dispatcher {
             type: ActionTypes.UpdateOrderECSignature,
         });
     }
-    public updateUserEtherBalance(balance: BigNumber) {
+    public updateUserWeiBalance(balance: BigNumber) {
         this._dispatch({
             data: balance,
             type: ActionTypes.UpdateUserEtherBalance,

packages/website/ts/redux/reducer.ts

@@ -38,7 +38,7 @@ export interface State {
     tokenByAddress: TokenByAddress;
     lastForceTokenStateRefetch: number;
     userAddress: string;
-    userEtherBalance: BigNumber;
+    userEtherBalanceInWei: BigNumber;
     // Note: cache of supplied orderJSON in fill order step. Do not use for anything else.
     userSuppliedOrderCache: Order;
 
@@ -77,7 +77,7 @@ const INITIAL_STATE: State = {
     tokenByAddress: {},
     lastForceTokenStateRefetch: moment().unix(),
     userAddress: '',
-    userEtherBalance: new BigNumber(0),
+    userEtherBalanceInWei: new BigNumber(0),
     userSuppliedOrderCache: undefined,
 
     // Docs
@@ -138,7 +138,7 @@ export function reducer(state: State = INITIAL_STATE, action: Action) {
         case ActionTypes.UpdateUserEtherBalance: {
             return {
                 ...state,
-                userEtherBalance: action.data,
+                userEtherBalanceInWei: action.data,
             };
         }