feat: Trash (#1082)

* wip: trash

* Enable restoration of deleted documents

* update Trash icon

* Add endpoint to trigger garbage collection

* fix: account for drafts

* fix: Archived documents should be deletable

* fix: Missing delete cascade

* bump: upgrade rich-markdown-editor

server/models/Document.js

@@ -147,9 +147,11 @@ Document.associate = models => {
   });
   Document.hasMany(models.Backlink, {
     as: 'backlinks',
+    onDelete: 'cascade',
   });
   Document.hasMany(models.Star, {
     as: 'starred',
+    onDelete: 'cascade',
   });
   Document.hasMany(models.View, {
     as: 'views',
@@ -514,6 +516,10 @@ Document.prototype.unarchive = async function(userId) {
   await collection.addDocumentToStructure(this);
   this.collection = collection;
 
+  if (this.deletedAt) {
+    await this.restore();
+  }
+
   this.archivedAt = null;
   this.lastModifiedById = userId;
   await this.save();