Got hot reloading working for comment threads

Used `this.$nuxt.refresh()` to refresh just the page data for the comments (when user submits a comment), instead of an in-elegant entire page reload using `this.$router.go(0)`

Faced slight problem of input fields persisting even after submitting, so had to add `this.content = ' '`

await this.$axios.post('/comments', {
...
})
this.content = ' '
this.$nuxt.refresh()

Ref:
https://stackoverflow.com/questions/41518609/clearing-input-in-vuejs-form
https://nuxtjs.org/docs/2.x/concepts/context-helpers#refreshing-page-data