feat(db): Add migration & fields to indicate a thread is closed

migrations/2018-05-25-160648_add_closed_column/down.sql

@@ -0,0 +1 @@
+ALTER TABLE threads DROP COLUMN closed;

migrations/2018-05-25-160648_add_closed_column/up.sql

@@ -0,0 +1 @@
+ALTER TABLE threads ADD COLUMN closed BOOLEAN NOT NULL DEFAULT false;

src/models.rs

@@ -39,6 +39,7 @@ pub struct Thread {
     pub posted: DateTime<Utc>,
     pub sticky: bool,
     pub user_id: i32,
+    pub closed: bool,
 }
 
 #[derive(Identifiable, Queryable, Serialize, Associations)]

src/schema.rs

@@ -33,6 +33,7 @@ table! {
         posted -> Timestamptz,
         sticky -> Bool,
         user_id -> Int4,
+        closed -> Bool,
     }
 }