Merge branch 'settings-import-export' into 'develop'

src/App.scss

src/components/export_import/export_import.vue

src/components/notifications/notifications.scss

src/components/notifications/notifications.vue

src/components/settings_modal/settings_modal.js

src/components/settings_modal/settings_modal.vue

src/components/settings_modal/tabs/theme_tab/theme_tab.js

src/components/settings_modal/tabs/theme_tab/theme_tab.vue

src/components/timeline/timeline.scss

src/components/timeline/timeline.vue

src/i18n/en.json

src/modules/config.js

src/services/export_import/export_import.js

src/services/style_setter/style_setter.js