Remove "Downloaded" from transferlist header and reduce column width

src/webui/www/public/prop-files.html

@@ -2,7 +2,7 @@
             <table class="torrentTable" cellpadding="0" cellspacing="0" style="width: 100%">
                     <thead>
                             <tr>
-                                    <th><a id="all_files_cb" style="margin-right: 2px;" class="tristate" onclick="javascript:switchCBState()"></a>&nbsp;&nbsp;_(Downloaded)</th>
+                                    <th style="width: 40px"><a id="all_files_cb" style="margin-right: 2px;" class="tristate" onclick="javascript:switchCBState()"></a></th>
                                     <th>_(Name)</th>
                                     <th>_(Size)</th>
                                     <th style="width: 90px;">_(Progress)</th>