NG_UI : layout : make 'rem' font size unit work properly in Chrome (without...

NG_UI : layout : make 'rem' font size unit work properly in Chrome (without setting the font size at the root element the 'rem' behaviour was inconsistent - different default sizes were taken depending if the size was assigned to an element itself or inherited from a parent - in Firefox it worked fine)

openbis_ng_ui/index.html

@@ -5,6 +5,9 @@
     <meta charset="utf-8" />
     <link rel="shortcut icon" href="#" />
     <style>
+      html {
+        font-size: 16px;
+      }
       body {
         height: 100%;
         min-height: 100%;
@@ -23,7 +26,7 @@
     </style>
     <script>
       function loadError() {
-        window.onload = function() {
+        window.onload = function () {
           let text = 'Error: Could not connect to openBIS.'
           let h2 = document.createElement('h2')
           var textnode = document.createTextNode(text)