Client's public folder renamed to static

Regular campaign sender seems to have most of the code in place. (Not tested.)

client/static/css/mailtrain.css

@@ -0,0 +1,57 @@
+.glyphicon.spinning {
+    animation: spin 1s infinite linear;
+    -webkit-animation: spin2 1s infinite linear;
+}
+
+@keyframes spin {
+    from { transform: scale(1) rotate(0deg); }
+    to { transform: scale(1) rotate(360deg); }
+}
+
+@-webkit-keyframes spin2 {
+    from { -webkit-transform: rotate(0deg); }
+    to { -webkit-transform: rotate(360deg); }
+}
+
+/* Supporting wider description lists */
+
+@media screen and (min-width: 768px) {
+    .dl-horizontal dt {
+        width: 200px;
+    }
+
+    .dl-horizontal dd {
+        margin-left: 220px;
+    }
+}
+
+h2 .glyphicon {
+    font-size: .75em;
+}
+h3 .glyphicon {
+    font-size: .8em;
+}
+
+tbody>tr.selected {
+    background-color: rgb(218, 231, 255);
+}
+
+.table-hover>tbody>tr.selected:hover {
+    background-color: rgb(205, 212, 226);
+}
+
+.row-actions .row-action {
+    padding-right: 15px;
+}
+
+.row-actions .row-action:last-child {
+    padding-right: 0px;
+}
+
+.navbar {
+    margin-bottom: 8px;
+}
+
+.breadcrumb {
+    margin-bottom: 8px;
+}