處理Salesforce RichText 無法 Render問題

參考連結:

https://medium.com/@toninotrip/how-to-re-render-an-apex-inputtextarea-in-visualforce-9452c8b80b57
https://andrewbcummings.wordpress.com/2013/07/19/salesforce-richtext-fail-rerender-is-not-currently-supported-with-rich-text-editing-enabled/