Freeze vuejs version (#78)

* some bugs in last vuejs versions were making web gui break

* previously iop4 web gui was using last version available

* this freezes to 3.4.9, to be updated manually after checking new versions work

iop4api/templates/iop4api/index.html

@@ -10,10 +10,9 @@
     <link href="https://fonts.googleapis.com/css2?family=Material+Symbols+Outlined" rel="stylesheet" />
 
     <!-- Vue.js -->
-    <script src="https://unpkg.com/vue@3/dist/vue.global.prod.js"></script>
-    <!-- QUASAR - vue.js (stylesheets) -->
+    <script src="https://cdnjs.cloudflare.com/ajax/libs/vue/3.4.9/vue.global.prod.min.js" integrity="sha512-CP6yhSirAJn9qCZWv/TQSa6oZ+sgOZ95I5HmFTxStR/n/8NAmyKoqstZEZPlQ/aPmRJNOvvF3omnxuPn1g4aew==" crossorigin="anonymous" referrerpolicy="no-referrer"></script>    <!-- QUASAR - vue.js (stylesheets) -->
     <link href="https://fonts.googleapis.com/css?family=Roboto:100,300,400,500,700,900|Material+Icons|Material+Icons+Outlined" rel="stylesheet" type="text/css">
-    <script src="https://cdn.jsdelivr.net/npm/quasar@v2/dist/icon-set/material-icons-outlined.umd.prod.js"></script>
+    <script src="https://cdn.jsdelivr.net/npm/quasar@2.12.5/dist/icon-set/material-icons-outlined.umd.prod.js"></script>
     <link href="https://cdn.jsdelivr.net/npm/quasar@2.12.5/dist/quasar.prod.css" rel="stylesheet" type="text/css"> 
 
     <!-- Tabulator -->