Application Instances: Simplify Project Navigation

[Pezmc]

Merge target is the feature branch for application instances as part of #1689: feat-1689-application-instances

Description

Related Issue(s)

#1719

[knolleary]

I'm not seeing the same thing as the screenshots.

When viewing an instance, I have the 'old' sidebar still - no navigation back to the project:

I'm pretty sure this isn't a local caching/rebuilding thing... although I can't 100% rule that out yet.

[knolleary]

I'm not seeing the same thing as the screenshots.

User error... ignore me.

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I'm not convinced the navigation is quite right - still feeling 'lost' when viewing an instance.

A difficultly we have is that for users with a single instance in the app (ie every existing user) there is a 1-1 mapping of Application and Instance, and they could have the same name. That makes it tricky to know if you're seeing the application name or the instance name in the navigation. I know we aren't doing a full redesign of the navigation in this iteration, so we can move ahead as-is. But I would like to try to spare some cycles to iterate on this within this release.