Simplify empty account balance rendering

test/unit/util_test.js

@@ -142,7 +142,7 @@ describe('util', function() {
 
     it('when given nothing', function() {
       var result = util.formatBalance()
-      assert.equal(result, 'None', 'should return "None"')
+      assert.equal(result, '0 ETH', 'should return "0 ETH"')
     })
 
     it('should return eth as string followed by ETH', function() {

ui/app/util.js

@@ -99,7 +99,7 @@ function formatBalance (balance, decimalsToKeep) {
   var parsed = parseBalance(balance)
   var beforeDecimal = parsed[0]
   var afterDecimal = parsed[1]
-  var formatted = 'None'
+  var formatted = '0 ETH'
   if (decimalsToKeep === undefined) {
     if (beforeDecimal === '0') {
       if (afterDecimal !== '0') {