Final V2 Changes (#212)

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

* Fix errors, add dependency route, finish PR

* Fix clippy errors

migrations/20210611024943_archived-status-notifications-icon-rejection-reasons.sql

@@ -0,0 +1,18 @@
+INSERT INTO statuses (status) VALUES ('archived');
+
+ALTER TABLE notifications
+    ADD COLUMN type varchar(256);
+
+ALTER TABLE mods
+    ADD COLUMN rejection_reason varchar(2000),
+    ADD COLUMN rejection_body varchar(65536);
+
+DROP TABLE dependencies;
+
+CREATE TABLE dependencies (
+    id serial PRIMARY KEY,
+    dependent_id bigint REFERENCES versions ON UPDATE CASCADE NOT NULL,
+    dependency_type varchar(255) NOT NULL,
+    dependency_id bigint REFERENCES versions ON UPDATE CASCADE,
+    mod_dependency_id bigint REFERENCES mods ON UPDATE CASCADE
+);