MWGalleryInspectorTool: Provide the tool in the toolbar

Now that the toolbar hides extra features by default, we don't need to
use autoAddToGroup and autoAddToCatchall over-rides.

Change-Id: I493f7d46a3f77e7c62af05f8e05ae4dde7147e4b
Merge "MWGalleryInspectorTool: Provide the tool in the toolbar"