Add notification types

migrations/schema.sql

@@ -254,6 +254,7 @@ CREATE TABLE IF NOT EXISTS tasks(
 CREATE TABLE IF NOT EXISTS notifications(
     id int NOT NULL AUTO_INCREMENT,
     eventId VARCHAR(128), // reference to eventlog. can be null
+    type VARCHAR(128) NOT NULL DEFAULT ""
     title VARCHAR(512) NOT NULL,
     message TEXT,
     acknowledged BOOLEAN DEFAULT false,