DESIGN - DEVELOPMENT - AMerchantsGuideToGalaxy2 - Made the application run as meant to be.

Changes:
1. No upper casing of input roman numerals.
2. value is arrived at just by type casting it.
3. Duplicious Exception messages muted.
4. Answers are generation depends upon answer format.
5. Added one more Roman numeral sanity check.
6. Added and modified inputs