restore manual saving of notes

[epugh]

Description

The auto saving of notes never quite worked well...

Motivation and Context

if you typed fast you lost your notes. See #164

How Has This Been Tested?

manually

Screenshots or GIFs (if appropriate):

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• [] New feature (non-breaking change which adds functionality)
• [] Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• My code follows the code style of this project.
• [] My change requires a change to the documentation.
• [] I have updated the documentation accordingly.
• [] I have read the CONTRIBUTING document.
• [] I have added tests to cover my changes.
• All new and existing tests passed.