when importing picklines, if the survey line's final depth is one of the default
values (e.g. current_surface_from_bin), then set the imported pickline as the
final depth line
- this was requested by Holly to remove tediousness from testing
Merge pull request #89 from twdb/feature/set-pickline-as-final-if-default

when importing picklines, if the survey line's final depth is one of the...