Issue #2147501 by dawehner: Convert most of the left over local tasks.

core/lib/Drupal/Core/Menu/LocalTaskManager.php

core/modules/contact/contact.local_tasks.yml

core/modules/contact/contact.module

core/modules/content_translation/content_translation.module

core/modules/entity/entity.local_tasks.yml

core/modules/entity/entity.module

core/modules/filter/filter.local_tasks.yml

core/modules/filter/filter.module

core/modules/image/image.local_tasks.yml

core/modules/image/image.module

core/modules/menu/menu.local_tasks.yml

core/modules/menu/menu.module

core/modules/node/node.local_tasks.yml

core/modules/node/node.module

core/modules/path/path.local_tasks.yml

core/modules/path/path.module

core/modules/picture/picture.local_tasks.yml

core/modules/picture/picture.module

...ules/search/lib/Drupal/search/Form/SearchSettingsForm.php

...h/lib/Drupal/search/Plugin/Derivative/SearchLocalTask.php