Issue #475: Fix to be able to graph columns with percentage values

docs/src/widget.queryeditor.html

@@ -145,8 +145,8 @@ my.QueryEditor = Backbone.View.extend({
           <div class="input-group-addon"> \
             <i class="glyphicon glyphicon-search"></i> \
           </div> \
-          <label>Search</label> \
-          <input class="form-control search-query" type="text" name="q" value="{{q}}" placeholder="Search data ..."> \
+          <label for="q">Search</label> \
+          <input class="form-control search-query" type="text" id="q" name="q" value="{{q}}" placeholder="Search data ..."> \
         </div> \
       </div> \
       <button type="submit" class="btn btn-default">Go »</button> \