Info message should be easily replaceable in 'dir-empty.hbs'

[colemanProjects]

Describe the bug In order for an app to replace the text for this, you would have to create a new component in your app called dir-empty.hbs (which is not navi namespaced).

also, the app has to remove the navi-info-message component, or explicitly pull that package into the app. Would be nice if we could simply replace a property on a component js file.

To Reproduce Steps to reproduce the behavior:

1. Go to '...'
2. Click on '....'
3. Scroll down to '....'
4. See error

Expected behavior A clear and concise description of what you expected to happen.

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Desktop (please complete the following information):

• OS: [e.g. iOS]
• Browser [e.g. chrome, safari]
• Version [e.g. 22]

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