WebUI: Assign min width to speed limit labels

Try to prevent continuous changes in the width of the labels.

src/webui/www/private/index.html

@@ -124,9 +124,9 @@
                     <td style="width: 2px;margin:0;"><img src="images/skin/toolbox-divider.gif" alt="" style="height: 18px; padding-left: 10px; padding-right: 10px; margin-bottom: -2px;"/></td>
                     <td style="cursor:pointer;"><img id="alternativeSpeedLimits" alt="_(Alternative speed limits)" src="images/slow_off.png" /></td>
                     <td style="width: 2px;margin:0;"><img src="images/skin/toolbox-divider.gif" alt="" style="height: 18px; padding-left: 10px; padding-right: 10px; margin-bottom: -2px;"/></td>
-                    <td id="DlInfos" style="cursor:pointer;"></td>
+                    <td id="DlInfos" style="cursor:pointer; min-width: 200px"></td>
                     <td style="width: 2px;margin:0;"><img src="images/skin/toolbox-divider.gif" alt="" style="height: 18px; padding-left: 10px; padding-right: 10px; margin-bottom: -2px;"/></td>
-                    <td id="UpInfos" style="cursor:pointer;"></td></tr>
+                    <td id="UpInfos" style="cursor:pointer; min-width: 200px"></td></tr>
             </table>
         </div>
     </div>