Expected results

$type: richTextField provides a simple HTML editor instead of CKEditor

Development notes

• Remove richTextField alias from RichTextFieldDefinition, deprecate RichTextFieldDefinition class
• Use the alias for the replacement field
• Use the same impl for vaadin7 framework (no compatibility)
• e.g. Vaadin's OOTB richtextarea https://vaadin.com/docs/v8/framework/components/components-richtextarea