Replaced Social icons with fontawesome icons except for speakerdeck and slideshare, css changes for other components

app/assets/stylesheets/splash.css.scss

@@ -110,3 +110,27 @@ a:after {
     color: #ff6633;
   }
 }
+
+#registration{
+  background-color: #e0e0e0;
+}
+
+#sponsors{
+  h2,h3,h4{
+    color: #fff;
+    font-weight: 400;
+  }
+
+  color: #fff;
+  background-color: #343b3d;
+}
+
+#social-media{
+  i{
+    color: #4a4a4a;
+  }
+
+  i:hover{
+    color: #16a085;
+  }
+}