support drag and drop for playlist items

dashboard-ui/bower_components/dragula.js/example/example.css

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+body {
+  background-color: #942A57;
+  margin: 0 auto;
+  max-width: 760px;
+}
+
+html, body {
+  -webkit-box-sizing: border-box;
+  -moz-box-sizing: border-box;
+  box-sizing: border-box;
+}
+
+*, *:before, *:after {
+  -webkit-box-sizing: inherit;
+  -moz-box-sizing: inherit;
+  box-sizing: inherit;
+}
+
+body, input, button {
+  font-family: Georgia, Helvetica;
+  font-size: 17px;
+  color: #ecf0f1;
+}
+
+h1 {
+  text-align: center;
+  background-color: #AC5C7E;
+  margin-top: 20px;
+  margin-bottom: 0;
+  padding: 10px;
+}
+
+h3 {
+  background-color: rgba(255, 255, 255, 0.2);
+  border-bottom: 5px solid #A13462;
+  text-align: center;
+  padding: 10px;
+}
+
+h3 div {
+  margin-bottom: 10px;
+}
+
+.tagline {
+  margin-top: 0;
+}
+.tagline-text {
+  vertical-align: middle;
+}
+.__slackin {
+  float: right;
+  margin-left: 10px;
+  vertical-align: middle;
+}
+
+.promo {
+  margin-bottom: 0;
+  font-style: italic;
+  padding: 10px;
+  background-color: #ff4020;
+  border-bottom: 5px solid #c00;
+}
+
+a {
+  font-weight: bold;
+}
+a,
+a:hover {
+  color: #ecf0f1;
+}
+
+pre {
+  white-space: pre-wrap;
+}
+
+pre code {
+  color: #fff;
+  font-size: 14px;
+  line-height: 1.3;
+}
+
+label {
+  display: block;
+  margin-bottom: 15px;
+}
+
+sub {
+  display: block;
+  text-align: right;
+  margin-top: -10px;
+  font-size: 11px;
+  font-style: italic;
+}
+
+ul {
+  margin: 0;
+  padding: 0;
+}
+
+.parent {
+  background-color: rgba(255, 255, 255, 0.2);
+  margin: 50px 0;
+  padding: 20px;
+}
+
+input {
+  border: none;
+  outline: none;
+  background-color: #ecf0f1;
+  padding: 10px;
+  color: #942A57;
+  border: 0;
+  margin: 5px 0;
+  display: block;
+  width: 100%;
+}
+
+button {
+  background-color: #ecf0f1;
+  color: #942A57;
+  border: 0;
+  padding: 18px 12px;
+  margin-left: 6px;
+  cursor: pointer;
+  outline: none;
+}
+
+button:hover {
+  background-color: #e74c3c;
+  color: #ecf0f1;
+}
+
+.gh-fork {
+  position: fixed;
+  top: 0;
+  right: 0;
+  border: 0;
+}
+
+/* dragula-specific example page styles */
+.wrapper {
+  display: table;
+}
+.container {
+  display: table-cell;
+  background-color: rgba(255, 255, 255, 0.2);
+  width: 50%;
+}
+.container:nth-child(odd) {
+  background-color: rgba(0, 0, 0, 0.2);
+}
+/*
+ * note that styling gu-mirror directly is a bad practice because it's too generic.
+ * you're better off giving the draggable elements a unique class and styling that directly!
+ */
+.container > div,
+.gu-mirror {
+  margin: 10px;
+  padding: 10px;
+  background-color: rgba(0, 0, 0, 0.2);
+  transition: opacity 0.4s ease-in-out;
+}
+.container > div {
+  cursor: move;
+  cursor: grab;
+  cursor: -moz-grab;
+  cursor: -webkit-grab;
+}
+.gu-mirror {
+  cursor: grabbing;
+  cursor: -moz-grabbing;
+  cursor: -webkit-grabbing;
+}
+.container .ex-moved {
+  background-color: #e74c3c;
+}
+.container.ex-over {
+  background-color: rgba(255, 255, 255, 0.3);
+}
+#left-lovehandles > div,
+#right-lovehandles > div {
+  cursor: initial;
+}
+.handle {
+  padding: 0 5px;
+  margin-right: 5px;
+  background-color: rgba(0, 0, 0, 0.4);
+  cursor: move;
+}
+.image-thing {
+  margin: 20px 0;
+  display: block;
+  text-align: center;
+}