bugfix.
Adds some styles for the toolbar.
Implements newNote method of NotesScene class.
Start editing a note by double clicking.
Set focus on the text area when the edit page is shown.
Update title when the content changes.
Implements the index map.
Add shortcut key to the text area.
Updates the index map section when a note is opened for editing.
Introduce q.js
Enables to save notes.
Enables to load the index file.
Enables to load the index file.