Nyall Dawson fac99702b4 Show "Unknown CRS" entry in crs selector widget when the source CRS
of a layer or project is unknown

Because:
1. It clearly indicates that the current CRS for the object is unknown
2. It lets users see the full WKT/proj definition of the CRS, and allows
them to copy this definition
3. Avoids loss of CRS information when just opening and accepting the dialog

Refs #33458
2020-02-04 16:51:29 +10:00
..
2020-01-16 17:08:40 +01:00
2020-01-16 15:11:02 +01:00