Add mute/unmute featrue and mutes management tab

src/components/mute_card/mute_card.js

src/components/user_card/user_card.js

src/components/user_card/user_card.vue

src/components/user_settings/user_settings.vue

src/modules/users.js

src/services/api/api.service.js

.../backend_interactor_service/backend_interactor_service.js

src/utils/url.js