Blender Git Loki

Fix T53141: Assert when using transformation in new 3D View editor

Was actually possible to invoke this assert failure in two ways:
* Transforming in newly created 3D View (like described in the report).
* Transforming in newly appended workspace from default workspaces.blend. Issue was that default workspaces.blend was saved in 2.8.1, but in a branch state that didn't include the transform-orientation changes. So versioning code wouldn't run when needed.

Note that files saved with this bug will still cause the assert to
fail. Can be ignored then.

This is not related to manipulators (as suggested in the report).