more fixes, add fullwidth

src/App.scss

src/components/emoji_input/emoji_input.vue

src/components/extra_buttons/extra_buttons.vue

src/components/notifications/notifications.vue

src/components/popover/popover.js

src/components/popover/popover.vue

src/components/react_button/react_button.vue

src/components/scope_selector/scope_selector.vue

src/components/side_drawer/side_drawer.vue

src/components/timeline/timeline.vue

src/components/timeline_menu/timeline_menu.vue

src/hocs/with_load_more/with_load_more.js