event_log - entity and logging sync info

migrations/0025__create_event_log.sql

@@ -0,0 +1,10 @@
+CREATE TABLE `event_log` (
+	`id`	INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT,
+	`note_id`	TEXT,
+	`comment`	TEXT,
+	`date_added`	INTEGER NOT NULL
+);
+
+CREATE INDEX `IDX_event_log_date_added` ON `event_log` (
+	`date_added`
+);