Allow in place editing of currencies

This page is a capture in the next bucket of the product backlog — a pre-sprint idea, not yet pulled into a sprint as a story.

For expediency users should be able to edit multiple currencies and save them in one go directly in the grid. Shift enter to edit a field seems interesting.

Users need to be made aware when there are changes in CRUD objects, and there needs to be a reload button to reload data from the database in that case. This could be done by making the reload button a different colour when data is available.

Make the reload button blue when there are changes.

Notes:

Emacs 29.1 (Org mode 9.6.6)