Make it possible to edit template part properties in focus mode

[jameskoster]

When a template part is selected in the template editing view it's possible to edit its properties like area in the Advanced panel:

It should also be possible to manage these properties whilst editing a tempalte part in focus mode. Perhaps in the currently-empty Template tab:

Or the template details popover:

[karmatosed]

I like the idea of the template tab but my concern is we are heading to multiple places for information. I get the desire to access important things, but you don't need access to everything in all places, so working out the interaction paths is key here and use cases.

[jameskoster]

For me it's more a question of appropriate hierarchy. For example I don't know that it should be necessary to enter template part focus mode to change a template part properties, that could lead to some frustrating UX. So placing those options in the Advanced panel seems sensible.

But since focus mode feels like the primary template part editing interface, it seems logical that fundamental properties like the name should be editable there too.

[jameskoster]

In light of discussions elsewhere it might make sense to put these controls in the top toolbar, with a view removing the sad and empty "Template" tab from the insepctor.

Editing a post	Editing a Template Part

If we need a short-term solution, it would probably be fine to put these controls (area / html element) in the Inspector.