fix(filters): ensure formatNumber observes i18n decimal separators

Closes #10342
Closes #12850

Author: petebacondarwin

src/ng/filter/filters.js

@@ -214,6 +214,7 @@ function formatNumber(number, pattern, groupSep, decimalSep, fractionSize) {
     if (fractionSize > 0 && number < 1) {
       formatedText = number.toFixed(fractionSize);
       number = parseFloat(formatedText);
+      formatedText = formatedText.replace(DECIMAL_SEP, decimalSep);
     }
   }
 

test/ng/filter/filtersSpec.js

@@ -62,6 +62,8 @@ describe('filters', function() {
     it('should format according different separators', function() {
       var num = formatNumber(1234567.1, pattern, '.', ',', 2);
       expect(num).toBe('1.234.567,10');
+      num = formatNumber(1e-14, pattern, '.', ',', 14);
+      expect(num).toBe('0,00000000000001');
     });
 
     it('should format with or without fractionSize', function() {