Add real email-based authentication, fix RC account auth to try all 3 login options when it doesn't know #20

rc_core/src/persist/user/traits.rs

@@ -15,7 +15,10 @@ pub enum ExtraUserInfo {
     Steam {
         id: u64,
     },
-    Standalone {
+    Username {
+        password: String,
+    },
+    Email {
         password: String,
     }
 }