UI Framework Overhaul

[joelthe1]

Vision for UI Upgrade

• http://prosemirror.net/
• https://ckeditor.com/ckeditor-5-framework/
• https://draftjs.org/
• http://slatejs.org/
• https://quilljs.com/
• https://medium.engineering/why-contenteditable-is-terrible-122d8a40e480

[joelthe1]

This is currently being worked on as a separate component: https://github.com/friendsofagape/usfm-editor