Added gamenight owners and some ui and api functions to delete gamenights.

backend/migrations/2022-05-14-104118_gamenight_owners/down.sql

@@ -0,0 +1,4 @@
+-- This file should undo anything in `up.sql`
+
+ALTER TABLE gamenight
+DROP COLUMN owner_id;

backend/migrations/2022-05-14-104118_gamenight_owners/up.sql

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+ALTER TABLE gamenight RENAME TO _gamenight_old;
+
+CREATE TABLE gamenight (
+    id INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT,
+    game text TEXT NOT NULL,
+    datetime TEXT NOT NULL,
+    owner_id INTEGER NOT NULL,
+    CONSTRAINT FK_OwnerId FOREIGN KEY (owner_id) REFERENCES user(id) ON DELETE CASCADE
+);
+
+PRAGMA foreign_keys=off;
+
+INSERT INTO gamenight (id, game, datetime, owner_id)
+select id, game, datetime, -1
+FROM _gamenight_old;
+
+drop table _gamenight_old;
+
+PRAGMA foreign_keys=on;