Adapt setFrozenFields to recent setFields changes in editor.js

Fixes #11

src/frozen_fields/main.py

@@ -88,9 +88,8 @@
     for (var i=0; i<fields.length; i++) {
         var n = fields[i][0];
         var f = fields[i][1];
-        if (!f) {
-            f = "<br>";
-        }
+
+        // ----------- mod start -----------
         txt += "<tr><td style='width:28px'></td><td class=fname>{0}</td></tr><tr>".format(n);
         
         if (frozen[i]) {
@@ -101,12 +100,18 @@
         }
         
         txt += "<td width=100%%>"
+        // -----------  mod end -----------
+        
         txt += "<div id=f{0} onkeydown='onKey();' oninput='onInput()' onmouseup='onKey();'".format(i);
-        txt += " onfocus='onFocus(this);' onblur='onBlur();' class=field ";
+        txt += " onfocus='onFocus(this);' onblur='onBlur();' class='field clearfix' ";
         txt += "ondragover='onDragOver(this);' onpaste='onPaste(this);' ";
         txt += "oncopy='onCutOrCopy(this);' oncut='onCutOrCopy(this);' ";
         txt += "contentEditable=true class=field>{0}</div>".format(f);
+
+        // ----------- mod start -----------
         txt += "</td>"
+        // -----------  mod end -----------
+
         txt += "</td></tr>";
     }
     $("#fields").html("<table cellpadding=0 width=100%% style='table-layout: fixed;'>" + txt + "</table>");