Base model refactor (#810)

* Big upgrades

* WIP: Stash

* Stash, 30 flow errors left

* Downgrade mobx

* WIP

* When I understand the difference between class and instance methods

* 💚

* Fixes: File import
Model saving edge cases
pinning and starring docs
Collection editing
Upgrade mobx devtools

* Notification settings saving works

* Disabled settings

* Document mailer

* Working notifications

* Colletion created notification
Ensure not notified for own actions

* Tidy up

* Document updated event only for document creation
Add indexes
Notification setting on user creation

* Commentary

* Fixed: Notification setting on signup

* Fix document move / duplicate stale data
Add BaseModel.refresh method

* Fixes: Title in sidebar not updated after editing document

* 💚

* Improve / restore error handling
Better handle offline errors

* 👕

server/models/NotificationSetting.js

@@ -0,0 +1,33 @@
+// @flow
+import { DataTypes, sequelize } from '../sequelize';
+
+const NotificationSetting = sequelize.define(
+  'notification_setting',
+  {
+    id: {
+      type: DataTypes.UUID,
+      defaultValue: DataTypes.UUIDV4,
+      primaryKey: true,
+    },
+    event: {
+      type: DataTypes.STRING,
+    },
+  },
+  {
+    timestamps: true,
+    updatedAt: false,
+  }
+);
+
+NotificationSetting.associate = models => {
+  NotificationSetting.belongsTo(models.User, {
+    as: 'user',
+    foreignKey: 'userId',
+  });
+  NotificationSetting.belongsTo(models.Team, {
+    as: 'team',
+    foreignKey: 'teamId',
+  });
+};
+
+export default NotificationSetting;