Stats processing: Add previousDownload field in addition to downloadInterval

sitescripts/stats/template/fileStats.html

Index: sitescripts/stats/template/fileStats.html
===================================================================
--- a/sitescripts/stats/template/fileStats.html
+++ b/sitescripts/stats/template/fileStats.html
@@ -111,17 +111,17 @@
     {%- endfor %}
 
     <div id="quickLinks">
       {%- if filterFields|length > 0 %}
         <a href="#overview">Overview</a>
       {%- endif %}
 
       {%- for field in fields %}
-        {%- if not field.filter and field.name in data %}
+        {%- if not field.filter and not field.hidden and field.name in data %}
           <a href="#{{field.name}}">{{field.title}}</a>
         {%- endif %}
       {%- endfor %}
     </div>
 
     {%- if filterFields|length > 0 %}
       {%- if filter %}
         {%- set params = {"totalhits": data.hits, "totalbandwidth": data.bandwidth, "field": {"name": None}} %}
@@ -142,17 +142,17 @@
                   filtered_url=filtered_urls.get(field.name, {}).get("true", None))}}
           {%- endfor %}
           {{row("Total", {"hits": params.totalhits, "bandwidth": params.totalbandwidth}, params, special=True, emph=True, chart=False)}}
         </table>
       </div>
     {%- endif %}
 
     {%- for field in fields %}
-      {%- if not field.filter and field.name in data %}
+      {%- if not field.filter and not field.hidden and field.name in data %}
         {%- set items = data[field.name]|sortfield(field) %}
         {%- set params = {"maxhits": items|maxhits, "maxbandwidth": items|maxbandwidth,
                           "totalhits": items|sumhits, "totalbandwidth": items|sumbandwidth,
                           "field": field} %}
         {%- set count = items|length %}
         <div id="{{field.name}}" class="block_title">{{field.title}}</div>
         <div class="block">
           <table align="center">