[RFR] Migrate simple example to hooks

[zyhou]

• Migrate PostList.js hooks
• Migrate PostCreate.js hooks
• Migrate ResetViewsButton.js hooks
• Migrate CommentEdit.js to hooks
• Migrate CommentList.js to hooks
• Migrate PostPreview.js to hooks
• Migrate PostQuickCreate.jshooks
• Migrate PostQuickCreateCancelButton.js to hooks
• Migrate PostReferenceInput.js to hooks
• Migrate UserEdit.js hooks
• useSelector isLoading (don't remove the props)

Review with "Hide whitespace changes" params

[zyhou]

@djhi Can you take a look on PostQuickCreate.js I don't understand why I can't use useSelector in this case.

If you use useSelector, we need to click twice on "save" button

[fzaninotto]

@zyhou I fixed the useSelector bug

[djhi]

As discussed today, I think we shouldn't use useCallback all the time but only if and when we notice performance issues. Not sure it is important though.

[fzaninotto]

No, useCallback wasn't the cause of the problem.

[djhi]

No, useCallback wasn't the cause of the problem.

I didn't say it was. I just think they aren't necessary unless a performance issue arise.

[djhi]

I really think we are over-complicating things with those useCallback. They shouldn't be the default and it probably shouldn't be what we show in an example.

[fzaninotto]

Let's merge it like that. We'll review it once the core performance gets on par with 2.0.