Added basic mobile.css for duck's theme

i2p2www/static/styles/duck/mobile.css

@@ -0,0 +1,31 @@
+#topbar .title h1 {
+    display: none;
+}
+
+div#content .main {
+    padding: 4em 10%;
+}
+
+.main .get-i2p {
+    margin-bottom: -1.5em;
+    margin-top: .5em;
+    position: relative;
+    right: 0;
+}
+
+div#content .aside {
+    margin-left: 0%;
+    width: 100%;
+}
+
+.sig {
+    display: none;
+}
+
+#global-footer .aside {
+    width: 49%;
+}
+
+#global-footer .aside.third, #global-footer .aside.fifth {
+    margin-left: 0;
+}