Client's public folder renamed to static

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

client/static/css/footer.css

@@ -0,0 +1,37 @@
+/* Sticky footer styles
+-------------------------------------------------- */
+
+html {
+    position: relative;
+    min-height: 100%;
+}
+
+body {
+    /* Margin bottom by footer height */
+    margin-bottom: 60px;
+}
+
+.footer {
+    position: absolute;
+    bottom: 0;
+    width: 100%;
+    /* Set the fixed height of the footer here */
+    height: 60px;
+    background-color: #f5f5f5;
+}
+
+.footer .text-muted {
+    margin: 20px 0;
+}
+
+div.jumbotron{
+    margin-top: -21px;
+}
+
+.code-editor {
+    height: 400px;
+}
+
+.gpg-text {
+    font-family: monospace;
+}