#806 reactivar filtro currency

client/core/src/filters/currency.js

@@ -7,8 +7,8 @@ import ngModule from '../module';
  */
 export default function currency() {
     return function(input, symbol, fractionSize) {
-        if (input == null || input === '')
-            return null;
+        if (input === undefined || input === '')
+            return undefined;
         if (typeof input == 'number' && fractionSize)
             input = input.toFixed(fractionSize);
         return `${input} ${symbol}`;

client/core/src/filters/index.js

@@ -3,4 +3,4 @@ import './ucwords';
 import './dash-if-empty';
 import './dateTime';
 import './percentage';
-// import './currency';
+import './currency';