The goal of this work is to deliver a sufficiently complete implementation of an editor application based on the RichTextArea that users can adopt as is or use as, or use it as a foundation for a more complex editor.

Improvements include:
- syncing the toolbar with current character attributes
- improved toolbar behavior in regards to character attributes, utilizing the new 'insertStyles' property JDK-8374035
- paragraph format dialog, toolbar button, main menu