Add log when update username

databases/_upgrade_private_2.sql

@@ -0,0 +1,13 @@
+BEGIN TRANSACTION;
+
+CREATE TABLE IF NOT EXISTS "userNameLogs" (
+	"userID"	TEXT NOT NULL,
+	"newUserName"	TEXT NOT NULL,
+	"oldUserName"	TEXT NOT NULL,
+	"updatedByAdmin"	BOOLEAN NOT NULL,
+	"updatedAt"	INTEGER NOT NULL
+);
+
+UPDATE "config" SET value = 2 WHERE key = 'version';
+
+COMMIT;