Altered:
- Changed the SMAK exporter to not export filler data.

Part of #952
Altered:
- The standard and VESPERS 2D ASCII exporters to not export the filler
data.
Altered:
- Fixed a bug where if a map was cancelled or skipped on the last line
it would still write out the filler data.
Altered:
- Removed the filler data from the 3D ascii exporter for VESPERS.
Merge pull request #965 from acquaman/Issue952

Builds on my machine and looks good.