* update eslint's `comma-dangle` rule to `always-multiline`
* add check and fix scripts to package.json
* Invoke `yarn fix` to adopt the updated eslint rules. No other changes are included.
* Update mattermost-redux
* Tap on Deleted post to remove it
* Improvements when rendering post additional content
* Avoid unnecessary re-renders on the post list component
* Avoid unnecessary re-renders on the channel post list component
* Avoid unnecessary re-renders on the channel screen
* Feedback review