remove polyfill.io becouse of security (#359)

Author: karion

Resources/js/index-with-es5-shim.html

@@ -6,7 +6,7 @@
         <script src="libs/jquery-1.6.1.min.js"></script>
         <script src="libs/es5-shim.js"></script>
         <script src="libs/qunit/qunit.js"></script>
-        <script src="https://polyfill.io/v3/polyfill.min.js?features=Intl,Intl.~locale.fr,Intl.PluralRules.~locale.fr,Intl.PluralRules,Number.isFinite"></script>
+        <script src="https://cdnjs.cloudflare.com/polyfill/v3/polyfill.min.js?features=Intl,Intl.~locale.fr,Intl.PluralRules.~locale.fr,Intl.PluralRules,Number.isFinite"></script>
         <script src="https://unpkg.com/intl-messageformat@9.0.2/dist/umd/intl-messageformat.min.js"></script>
         <script src="translator.js"></script>
         <script src="translatorTest.js"></script>

Resources/js/index.html

@@ -5,7 +5,7 @@
         <title>ExposeTranslationBundle Unit Tests</title>
         <script src="libs/jquery-1.6.1.min.js"></script>
         <script src="libs/qunit/qunit.js"></script>
-        <script src="https://polyfill.io/v3/polyfill.min.js?features=Intl,Intl.~locale.fr,Intl.PluralRules.~locale.fr,Intl.PluralRules,Number.isFinite"></script>
+        <script src="https://cdnjs.cloudflare.com/polyfill/v3/polyfill.min.js?features=Intl,Intl.~locale.fr,Intl.PluralRules.~locale.fr,Intl.PluralRules,Number.isFinite"></script>
         <script src="https://unpkg.com/intl-messageformat@9.0.2/dist/umd/intl-messageformat.min.js"></script>
         <script src="translator.js"></script>
         <script src="translatorTest.js"></script>