Visible flag for projects and assets

[mottosso]

Goal

Reduce clutter for active projects, by letting old/inactive projects and assets disappear from view.

Motivation

Mindbender has accumulated a few past projects, along with a few misspelled projects and assets. Rather than deleting things, which is dangerous for all sorts of reasons, it's better to simply hide them. That way, no references are broken, there is no need for undo or cautious backups.

Implementation

project["data"]["visible"] = False  # Defaults to True
asset["data"]["visible"] = False