Start fetching user timelines.

src/components/user_profile/user_profile.js

src/components/user_profile/user_profile.vue

src/modules/api.js

src/modules/statuses.js

src/services/api/api.service.js

.../backend_interactor_service/backend_interactor_service.js

src/services/timeline_fetcher/timeline_fetcher.service.js