Drop the accordion for the panel

* Deletes the accordion.less file
* Extends the panel to be collapsible with our JS plugin
* Supports panel color variations

dist/css/bootstrap.css

@@ -2589,7 +2589,6 @@ a.list-group-item:focus {
 }
 
 .panel {
-  padding: 15px;
   margin-bottom: 20px;
   background-color: #ffffff;
   border: 1px solid #dddddd;
@@ -2598,8 +2597,12 @@ a.list-group-item:focus {
           box-shadow: 0 1px 1px rgba(0, 0, 0, 0.05);
 }
 
+.panel-body {
+  padding: 15px;
+}
+
 .panel .list-group {
-  margin: 15px -15px -15px;
+  margin-bottom: 0;
 }
 
 .panel .list-group .list-group-item {
@@ -2615,17 +2618,12 @@ a.list-group-item:focus {
   border-bottom: 0;
 }
 
-.panel-heading + .list-group {
-  margin-top: -15px;
-}
-
 .panel-heading + .list-group .list-group-item:first-child {
   border-top-width: 0;
 }
 
 .panel-heading {
   padding: 10px 15px;
-  margin: -15px -15px 15px;
   background-color: #f5f5f5;
   border-bottom: 1px solid #dddddd;
   border-top-right-radius: 3px;
@@ -2644,13 +2642,38 @@ a.list-group-item:focus {
 
 .panel-footer {
   padding: 10px 15px;
-  margin: 15px -15px -15px;
   background-color: #f5f5f5;
   border-top: 1px solid #dddddd;
   border-bottom-right-radius: 3px;
   border-bottom-left-radius: 3px;
 }
 
+.panel-group .panel {
+  margin-bottom: 0;
+  overflow: hidden;
+  border-radius: 4px;
+}
+
+.panel-group .panel + .panel {
+  margin-top: 5px;
+}
+
+.panel-group .panel-heading {
+  border-bottom: 0;
+}
+
+.panel-group .panel-heading + .panel-collapse .panel-body {
+  border-top: 1px solid #dddddd;
+}
+
+.panel-group .panel-footer {
+  border-top: 0;
+}
+
+.panel-group .panel-footer + .panel-collapse .panel-body {
+  border-bottom: 1px solid #dddddd;
+}
+
 .panel-primary {
   border-color: #428bca;
 }
@@ -2661,6 +2684,14 @@ a.list-group-item:focus {
   border-color: #428bca;
 }
 
+.panel-primary .panel-heading + .panel-collapse .panel-body {
+  border-top-color: #428bca;
+}
+
+.panel-primary .panel-footer + .panel-collapse .panel-body {
+  border-bottom-color: #428bca;
+}
+
 .panel-success {
   border-color: #d6e9c6;
 }
@@ -2671,6 +2702,14 @@ a.list-group-item:focus {
   border-color: #d6e9c6;
 }
 
+.panel-success .panel-heading + .panel-collapse .panel-body {
+  border-top-color: #d6e9c6;
+}
+
+.panel-success .panel-footer + .panel-collapse .panel-body {
+  border-bottom-color: #d6e9c6;
+}
+
 .panel-warning {
   border-color: #fbeed5;
 }
@@ -2681,6 +2720,14 @@ a.list-group-item:focus {
   border-color: #fbeed5;
 }
 
+.panel-warning .panel-heading + .panel-collapse .panel-body {
+  border-top-color: #fbeed5;
+}
+
+.panel-warning .panel-footer + .panel-collapse .panel-body {
+  border-bottom-color: #fbeed5;
+}
+
 .panel-danger {
   border-color: #eed3d7;
 }
@@ -2691,6 +2738,14 @@ a.list-group-item:focus {
   border-color: #eed3d7;
 }
 
+.panel-danger .panel-heading + .panel-collapse .panel-body {
+  border-top-color: #eed3d7;
+}
+
+.panel-danger .panel-footer + .panel-collapse .panel-body {
+  border-bottom-color: #eed3d7;
+}
+
 .panel-info {
   border-color: #bce8f1;
 }
@@ -2701,6 +2756,14 @@ a.list-group-item:focus {
   border-color: #bce8f1;
 }
 
+.panel-info .panel-heading + .panel-collapse .panel-body {
+  border-top-color: #bce8f1;
+}
+
+.panel-info .panel-footer + .panel-collapse .panel-body {
+  border-bottom-color: #bce8f1;
+}
+
 .well {
   min-height: 20px;
   padding: 19px;

dist/js/bootstrap.js

@@ -539,7 +539,7 @@ if (!jQuery) { throw new Error("Bootstrap requires jQuery") }
     this.$element.trigger(startEvent)
     if (startEvent.isDefaultPrevented()) return
 
-    var actives = this.$parent && this.$parent.find('> .accordion-group > .in')
+    var actives = this.$parent && this.$parent.find('> .panel > .in')
 
     if (actives && actives.length) {
       var hasData = actives.data('bs.collapse')