diff --git a/media/system/js/core-uncompressed.js b/media/system/js/core-uncompressed.js
index 1ce038a081ecf..55b90d270b044 100644
--- a/media/system/js/core-uncompressed.js
+++ b/media/system/js/core-uncompressed.js
@@ -322,8 +322,9 @@ Joomla.editors.instances = Joomla.editors.instances || {
 			messagesBox = document.createElement( 'div' );
 
 			// Message class
-			alertClass = (type == 'notice') ? 'alert-info' : 'alert-' + type;
-			alertClass = (type == 'message') ? 'alert-success' : alertClass;
+			alertClass = (type === 'notice') ? 'alert-info' : 'alert-' + type;
+			alertClass = (type === 'message') ? 'alert-success' : alertClass;
+			alertClass = (type === 'error') ? 'alert-error alert-danger' : alertClass;
 
 			messagesBox.className = 'alert ' + alertClass;
 
diff --git a/media/system/js/core.js b/media/system/js/core.js
index 7bbab0352719a..ba21634af2194 100644
--- a/media/system/js/core.js
+++ b/media/system/js/core.js
@@ -1,16 +1 @@
-Joomla=window.Joomla||{};Joomla.editors=Joomla.editors||{};Joomla.editors.instances=Joomla.editors.instances||{};
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-for(;;){var f=e["cb"+d];if(!f)break;f.checked=!1;d++}c.checked=!0;e.boxchecked.value=1;window.submitform(b);return!1};window.submitbutton=function(a){c.submitbutton(a)};window.submitform=function(a){c.submitform(a)};window.saveorder=function(a,b){window.checkAll_button(a,b)};window.checkAll_button=function(a,b){b=b?b:"saveorder";var e,d;for(e=0;e<=a;e++)if(d=g.adminForm["cb"+e])d.checked=!0;else{alert("You cannot change the order of items, as an item in the list is `Checked Out`");return}c.submitform(b)};
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-d.style["background-position"]="center";d.style["background-repeat"]="no-repeat";d.style["background-attachment"]="fixed";b.appendChild(d)}else g.getElementById("loading-logo")||c.loadingLayer("load",b),g.getElementById("loading-logo").style.display="show"==a?"block":"none";return g.getElementById("loading-logo")};c.extend=function(a,b){for(var c in b)b.hasOwnProperty(c)&&(a[c]=b[c]);return a};c.request=function(a){a=c.extend({url:"",method:"GET",data:null,perform:!0},a);a.method=a.data?"POST":a.method.toUpperCase();
-try{var b=window.XMLHttpRequest?new XMLHttpRequest:new ActiveXObject("MSXML2.XMLHTTP.3.0");b.open(a.method,a.url,!0);b.setRequestHeader("X-Requested-With","XMLHttpRequest");b.setRequestHeader("X-Ajax-Engine","Joomla!");if("POST"===a.method){var e=c.getOptions("csrf.token","");e&&b.setRequestHeader("X-CSRF-Token",e);a.headers&&a.headers["Content-Type"]||b.setRequestHeader("Content-Type","application/x-www-form-urlencoded")}if(a.headers)for(var d in a.headers)a.headers.hasOwnProperty(d)&&b.setRequestHeader(d,
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\ No newline at end of file
+Joomla=window.Joomla||{},Joomla.editors=Joomla.editors||{},Joomla.editors.instances=Joomla.editors.instances||{},function(e,t){"use strict";e.submitform=function(e,o,n){o||(o=t.getElementById("adminForm")),e&&(o.task.value=e),o.noValidate=!n,n?o.hasAttribute("novalidate")&&o.removeAttribute("novalidate"):o.setAttribute("novalidate","");var r=t.createElement("input");r.style.display="none",r.type="submit",o.appendChild(r).click(),o.removeChild(r)},e.submitbutton=function(t){e.submitform(t)},e.JText={strings:{},_:function(t,o){var n=e.getOptions("joomla.jtext");return n&&(this.load(n),e.loadOptions({"joomla.jtext":null})),o=void 0===o?"":o,t=t.toUpperCase(),void 0!==this.strings[t]?this.strings[t]:o},load:function(e){for(var t in e)e.hasOwnProperty(t)&&(this.strings[t.toUpperCase()]=e[t]);return this}},e.optionsStorage=e.optionsStorage||null,e.getOptions=function(t,o){return e.optionsStorage||e.loadOptions(),void 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