Final V2 Changes (#212)

* Redo dependencies, add rejection reasons, make notifications more readable

* Fix errors, add dependency route, finish PR

* Fix clippy errors

src/models/notifications.rs

@@ -12,6 +12,8 @@ pub struct NotificationId(pub u64);
 pub struct Notification {
     pub id: NotificationId,
     pub user_id: UserId,
+    #[serde(rename = "type")]
+    pub type_: Option<String>,
     pub title: String,
     pub text: String,
     pub link: String,