Fix: refresh my workspace

[thewahome]

Overview

• When certain functions are carried out against the workspace file, the workspace tree hasn't been responding accordingly. So the tree items did not match the contents of the file.

This PR introduces refreshes after:

• generation
• regeneration (button and command)
• delete -> a delay is added because the refresh was happening before the changes are complete in the workspace file

[baywet]

Thank you for making the changes!