CommentEditor: Use computed property instead of static data

[igeligel]

In the CommentEditor.vue component, we are using some bad Vue.js practice by not using a computed property. Instead, it will use a data property.

data() {
  return {
    comment: this.content || null
    // ...
  };
}

comment should rather be a computed property and used there. Be careful with changing it, because the data is also used as v-model in the textarea.

Resources

• https://vuejs.org/v2/guide/computed.html

[ikrydev]

assign me to this one... @igeligel