* Refactor analytics.js
* Update analytics calls in app.vue
* Update analytics calls in presets.vue
* Update analytics calls in tools.vue (and app.vue)
* Update analytics calls in global.vue
* Update analytics calls in domain.vue
* Update analytics calls in setup.vue
* Add list of all events to analytics.js
* Add custom copy to clipboard that emits event
* Emit the events from the components
* Update copyright year in all files touched
* Update analytics calls in download.vue
* Update analytics calls in ssl.vue
* Update analytics calls in certbot.vue
* Update analytics calls in domain.vue
* Update analytics calls in app.vue
* Note down 'Code snippet copied' events
* Add dropdown for language
* Use vue-i18n to translate strings
* Tweak header styling
* Add Chinese languages in
* Typo
* Get language from browser (#193)
* adaptive system language
* Modify the adaptive system language
* Remove dead code
* Delete lang default values
* Move browser language detection to util
* Remove todos
* Fix global PHP dropdown
Co-authored-by: 墨娘 <61287199+moniang@users.noreply.github.com>