more work for #179.

Due to changed display of the portal image it now doesn’t flicker anymore,
which simplifies code a lot.

code/utils_misc.js

@@ -216,3 +216,15 @@ window.uniqueArray = function(arr) {
     return $.inArray(v, arr) === i;
   });
 }
+
+window.genFourColumnTable = function(blocks) {
+  var t = $.map(blocks, function(detail, index) {
+    if(!detail) return '';
+    if(index % 2 === 0)
+      return '<tr><td>'+detail[1]+'</td><th>'+detail[0]+'</th>';
+    else
+      return '    <th>'+detail[0]+'</th><td>'+detail[1]+'</td></tr>';
+  }).join('');
+  if(t.length % 2 === 1) t + '<td></td><td></td></tr>';
+  return t;
+}