Для чего нужно приложение "Обзор"?

Я вижу программу в обзоре приложений в Ubuntu 17.10, которая называется "Обзор".

Для чего это приложение и является ли оно приложением по умолчанию для Ubuntu 17.10?

Нажатие на лаунчер ничего не делает.

Дополнительная информация

Я считаю, что его пусковая установка /usr/share/applications/org.laptop.WebActivity.activity.desktop,

Если я попытаюсь запустить Exec= команда от .desktop файл в командной строке, я получаю следующие ошибки:

cd /usr/share/sugar/activities/Browse.activity

sugar-activity webactivity.WebActivity -s

1517966060.546701 ERROR root: SUGAR_VERSION env variable not found
Traceback (most recent call last):
  File "/usr/bin/sugar-activity", line 220, in <module>
    main()
  File "/usr/bin/sugar-activity", line 215, in main
    instance = create_activity_instance(activity_constructor, activity_handle)
  File "/usr/bin/sugar-activity", line 48, in create_activity_instance
    activity = constructor(handle)
  File "/usr/share/sugar/activities/Browse.activity/webactivity.py", line 156, in __init__
    activity.Activity.__init__(self, handle)
  File "/usr/lib/python2.7/dist-packages/sugar3/activity/activity.py", line 422, in __init__
    self._jobject = self._initialize_journal_object()
  File "/usr/lib/python2.7/dist-packages/sugar3/activity/activity.py", line 476, in _initialize_journal_object
    datastore.write(jobject)
  File "/usr/lib/python2.7/dist-packages/sugar3/datastore/datastore.py", line 381, in write
    transfer_ownership)
  File "/usr/lib/python2.7/dist-packages/sugar3/datastore/datastore.py", line 331, in _create_ds_entry
    object_id = _get_data_store().create(dbus.Dictionary(properties), filename,
  File "/usr/lib/python2.7/dist-packages/sugar3/datastore/datastore.py", line 50, in _get_data_store
    DS_DBUS_PATH),
  File "/usr/lib/python2.7/dist-packages/dbus/bus.py", line 241, in get_object
    follow_name_owner_changes=follow_name_owner_changes)
  File "/usr/lib/python2.7/dist-packages/dbus/proxies.py", line 248, in __init__
    self._named_service = conn.activate_name_owner(bus_name)
  File "/usr/lib/python2.7/dist-packages/dbus/bus.py", line 180, in activate_name_owner
    self.start_service_by_name(bus_name)
  File "/usr/lib/python2.7/dist-packages/dbus/bus.py", line 278, in start_service_by_name
    'su', (bus_name, flags)))
  File "/usr/lib/python2.7/dist-packages/dbus/connection.py", line 651, in call_blocking
    message, timeout)
dbus.exceptions.DBusException: org.freedesktop.DBus.Error.ServiceUnknown: The name org.laptop.sugar.DataStore was not provided by any .service files
1517966060.613335 WARNING root: DSObject was deleted without cleaning up first. Call DSObject.destroy() before disposing it.

Вот вывод моих файлов журналов...

zgrep sugar /var/log/dpkg.log*

/var/log/dpkg.log.1:2018-01-27 00:11:22 install libsugarext0:amd64 <none> 0.110.0-4
/var/log/dpkg.log.1:2018-01-27 00:11:22 status half-installed libsugarext0:amd64 0.110.0-4
/var/log/dpkg.log.1:2018-01-27 00:11:22 status unpacked libsugarext0:amd64 0.110.0-4
/var/log/dpkg.log.1:2018-01-27 00:11:22 status unpacked libsugarext0:amd64 0.110.0-4
/var/log/dpkg.log.1:2018-01-27 00:11:22 install gir1.2-sugarext-1.0:amd64 <none> 0.110.0-4
/var/log/dpkg.log.1:2018-01-27 00:11:22 status half-installed gir1.2-sugarext-1.0:amd64 0.110.0-4
/var/log/dpkg.log.1:2018-01-27 00:11:22 status unpacked gir1.2-sugarext-1.0:amd64 0.110.0-4
/var/log/dpkg.log.1:2018-01-27 00:11:22 status unpacked gir1.2-sugarext-1.0:amd64 0.110.0-4
/var/log/dpkg.log.1:2018-01-27 00:11:22 install python-sugar3:all <none> 0.110.0-4
/var/log/dpkg.log.1:2018-01-27 00:11:22 status half-installed python-sugar3:all 0.110.0-4
/var/log/dpkg.log.1:2018-01-27 00:11:22 status unpacked python-sugar3:all 0.110.0-4
/var/log/dpkg.log.1:2018-01-27 00:11:22 status unpacked python-sugar3:all 0.110.0-4
/var/log/dpkg.log.1:2018-01-27 00:11:22 install sugar-browse-activity:all <none> 201.2-1
/var/log/dpkg.log.1:2018-01-27 00:11:22 status half-installed sugar-browse-activity:all 201.2-1
/var/log/dpkg.log.1:2018-01-27 00:11:22 status half-installed sugar-browse-activity:all 201.2-1
/var/log/dpkg.log.1:2018-01-27 00:11:22 status unpacked sugar-browse-activity:all 201.2-1
/var/log/dpkg.log.1:2018-01-27 00:11:22 status unpacked sugar-browse-activity:all 201.2-1
/var/log/dpkg.log.1:2018-01-27 00:12:01 configure libsugarext0:amd64 0.110.0-4 <none>
/var/log/dpkg.log.1:2018-01-27 00:12:01 status unpacked libsugarext0:amd64 0.110.0-4
/var/log/dpkg.log.1:2018-01-27 00:12:01 status half-configured libsugarext0:amd64 0.110.0-4
/var/log/dpkg.log.1:2018-01-27 00:12:01 status installed libsugarext0:amd64 0.110.0-4
/var/log/dpkg.log.1:2018-01-27 00:12:02 configure gir1.2-sugarext-1.0:amd64 0.110.0-4 <none>
/var/log/dpkg.log.1:2018-01-27 00:12:02 status unpacked gir1.2-sugarext-1.0:amd64 0.110.0-4
/var/log/dpkg.log.1:2018-01-27 00:12:02 status half-configured gir1.2-sugarext-1.0:amd64 0.110.0-4
/var/log/dpkg.log.1:2018-01-27 00:12:02 status installed gir1.2-sugarext-1.0:amd64 0.110.0-4
/var/log/dpkg.log.1:2018-01-27 00:12:18 configure python-sugar3:all 0.110.0-4 <none>
/var/log/dpkg.log.1:2018-01-27 00:12:18 status unpacked python-sugar3:all 0.110.0-4
/var/log/dpkg.log.1:2018-01-27 00:12:18 status half-configured python-sugar3:all 0.110.0-4
/var/log/dpkg.log.1:2018-01-27 00:12:18 status installed python-sugar3:all 0.110.0-4
/var/log/dpkg.log.1:2018-01-27 00:12:18 configure sugar-browse-activity:all 201.2-1 <none>
/var/log/dpkg.log.1:2018-01-27 00:12:18 status unpacked sugar-browse-activity:all 201.2-1
/var/log/dpkg.log.1:2018-01-27 00:12:18 status half-configured sugar-browse-activity:all 201.2-1
/var/log/dpkg.log.1:2018-01-27 00:12:18 status installed sugar-browse-activity:all 201.2-1