The problem 

$ grep 'dateFormat' * -r
control/static/tiny_mce/plugins/insertdatetime/editor_plugin.js:tinyMCE.importPluginLanguagePack('insertdatetime','cs,el,en,fr_ca,it,ko,sv,zh_cn,fa,fr,de,pl,pt_br,nl,da,he,nb,ru,ru_KOI8-R,ru_UTF-8,nn,fi,es,cy,is,pl');function TinyMCE_insertdatetime_getInfo(){return{longname:'Insert date/time',author:'Moxiecode Systems',authorurl:'http://tinymce.moxiecode.com',infourl:'http://tinymce.moxiecode.com/tinymce/docs/plugin_insertdatetime.html',version:tinyMCE.majorVersion+"."+tinyMCE.minorVersion};};function TinyMCE_insertdatetime_getControlHTML(control_name){switch(control_name){case "insertdate":var cmd='tinyMCE.execInstanceCommand(\'{$editor_id}\',\'mceInsertDate\');return false;';return '<a href="javascript:'+cmd+'" onclick="'+cmd+'" target="_self" onmousedown="return false;"><img id="{$editor_id}_insertdate" src="{$pluginurl}/images/insertdate.gif" title="{$lang_insertdate_desc}" width="20" height="20" class="mceButtonNormal" onmouseover="tinyMCE.switchClass(this,\'mceButtonOver\');" onmouseout="tinyMCE.restoreClass(this);" onmousedown="tinyMCE.restoreAndSwitchClass(this,\'mceButtonDown\');" /></a>';case "inserttime":var cmd='tinyMCE.execInstanceCommand(\'{$editor_id}\',\'mceInsertTime\');return false;';return '<a href="javascript:'+cmd+'" onclick="'+cmd+'" target="_self" onmousedown="return false;"><img id="{$editor_id}_inserttime" src="{$pluginurl}/images/inserttime.gif" title="{$lang_inserttime_desc}" width="20" height="20" class="mceButtonNormal" onmouseover="tinyMCE.switchClass(this,\'mceButtonOver\');" onmouseout="tinyMCE.restoreClass(this);" onmousedown="tinyMCE.restoreAndSwitchClass(this,\'mceButtonDown\');" /></a>';}return "";}function TinyMCE_insertdatetime_execCommand(editor_id,element,command,user_interface,value){function addZeros(value,len){value=""+value;if(value.length<len){for(var i=0;i<(len-value.length);i++)value="0"+value;}return value;}function getDateTime(date,format){format=tinyMCE.regexpReplace(format,"%D","%m/%d/%y");format=tinyMCE.regexpReplace(format,"%r","%I:%M:%S %p");format=tinyMCE.regexpReplace(format,"%Y",""+date.getFullYear());format=tinyMCE.regexpReplace(format,"%y",""+date.getYear());format=tinyMCE.regexpReplace(format,"%m",addZeros(date.getMonth()+1,2));format=tinyMCE.regexpReplace(format,"%d",addZeros(date.getDate(),2));format=tinyMCE.regexpReplace(format,"%H",""+addZeros(date.getHours(),2));format=tinyMCE.regexpReplace(format,"%M",""+addZeros(date.getMinutes(),2));format=tinyMCE.regexpReplace(format,"%S",""+addZeros(date.getSeconds(),2));format=tinyMCE.regexpReplace(format,"%I",""+((date.getHours()+11)%12+1));format=tinyMCE.regexpReplace(format,"%p",""+(date.getHours()<12?"AM":"PM"));format=tinyMCE.regexpReplace(format,"%B",""+tinyMCE.getLang("lang_inserttime_months_long")[date.getMonth()]);format=tinyMCE.regexpReplace(format,"%b",""+tinyMCE.getLang("lang_inserttime_months_short")[date.getMonth()]);format=tinyMCE.regexpReplace(format,"%A",""+tinyMCE.getLang("lang_inserttime_day_long")[date.getDay()]);format=tinyMCE.regexpReplace(format,"%a",""+tinyMCE.getLang("lang_inserttime_day_short")[date.getDay()]);format=tinyMCE.regexpReplace(format,"%%","%");return format;}switch(command){case "mceInsertDate":tinyMCE.execInstanceCommand(editor_id,'mceInsertContent',false,getDateTime(new Date(),tinyMCE.getParam("plugin_insertdate_dateFormat",tinyMCE.getLang('lang_insertdate_def_fmt'))));return true;case "mceInsertTime":tinyMCE.execInstanceCommand(editor_id,'mceInsertContent',false,getDateTime(new Date(),tinyMCE.getParam("plugin_insertdate_timeFormat",tinyMCE.getLang('lang_inserttime_def_fmt'))));return true;}return false;
$ find . -regextype posix-extended -name doc -prune -o -type f -regex '.*\.(html|mhtml|autohandler|syshandler|dhandler)$' | xargs grep 'dateFormat'