Favorite lists (#654)

Add tests

Remove the favorites pseudo namespace if there are no lists or tasks favorited

Regenerate swagger docs

Fix favorite lists not being updated because of nonexisting users (the favorite list does not have one)

Make the pseudo favorites list always favorited

Add favorited lists to the favorites pseudo namespace

Add favorite field to list

Co-authored-by: kolaente <k@knt.li>
Reviewed-on: https://kolaente.dev/vikunja/api/pulls/654

pkg/migration/20200905232458.go

@@ -0,0 +1,43 @@
+// Vikunja is a to-do list application to facilitate your life.
+// Copyright 2018-2020 Vikunja and contributors. All rights reserved.
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+package migration
+
+import (
+	"src.techknowlogick.com/xormigrate"
+	"xorm.io/xorm"
+)
+
+type list20200905232458 struct {
+	IsFavorite bool `xorm:"default false" json:"is_favorite"`
+}
+
+func (list20200905232458) TableName() string {
+	return "list"
+}
+
+func init() {
+	migrations = append(migrations, &xormigrate.Migration{
+		ID:          "20200905232458",
+		Description: "Add is_favorite field to lists",
+		Migrate: func(tx *xorm.Engine) error {
+			return tx.Sync2(list20200905232458{})
+		},
+		Rollback: func(tx *xorm.Engine) error {
+			return nil
+		},
+	})
+}