fixes #5756: duplicate media CSS in compiled builds

docs/customize.html

@@ -144,7 +144,6 @@
               </div><!-- /span -->
               <div class="span3">
                 <h3>Miscellaneous</h3>
-                <label class="checkbox"><input checked="checked" type="checkbox" value="media.less"> Media object</label>
                 <label class="checkbox"><input checked="checked" type="checkbox" value="wells.less"> Wells</label>
                 <label class="checkbox"><input checked="checked" type="checkbox" value="close.less"> Close icon</label>
                 <label class="checkbox"><input checked="checked" type="checkbox" value="utilities.less"> Utilities</label>

docs/templates/pages/customize.mustache

@@ -73,7 +73,6 @@
               </div><!-- /span -->
               <div class="span3">
                 <h3>{{_i}}Miscellaneous{{/i}}</h3>
-                <label class="checkbox"><input checked="checked" type="checkbox" value="media.less"> {{_i}}Media object{{/i}}</label>
                 <label class="checkbox"><input checked="checked" type="checkbox" value="wells.less"> {{_i}}Wells{{/i}}</label>
                 <label class="checkbox"><input checked="checked" type="checkbox" value="close.less"> {{_i}}Close icon{{/i}}</label>
                 <label class="checkbox"><input checked="checked" type="checkbox" value="utilities.less"> {{_i}}Utilities{{/i}}</label>