feat(users): merge promotion into revenue center

assets/css/routes/user-center.css

@@ -2,4 +2,6 @@
 @import url("user-center/credits.css");
 @import url("user-center/level.css");
 @import url("user-center/settings.css");
+@import url("revenue.css");
+@import url("user-center/revenue.css");
 @import url("user-center/responsive.css");