Report Curvilinear or other coordinate-handling attributes on opening datasets

[AnsleyManke]

A recent question on the Users List was wondering if Ferret automatically applies Formula terms attribugtes for vertical gridding. This makes me think we should issue a note about non-rectilinear grids when opening datasets that have attributes that point to these "fancier" features. We have tools that let the user work with the data, but they have to know to do that

Likewise perhaps with Discrete Sampling Geometries datasets, where it's somewhat of the opposite thing; we're automatically doing things people might not expect.

Andrew, any thoughts? @AndrewWittenberg