Cleaned Up Comments and UI for Presentation

- got rid of large commented-out regions
- finished error-checking for the UI
- this should be reasonably unbreakable
Fixed a few comments in the RequirementPanel.
Commented Code

- went through all the files I edited and made sure it was
well-commented
Cleaned Up Code and More Tests

-Removed comments from RequirementManagerTest
-Fixed some errors on RequirementManagerTest
-Start of ResultsTableModelTest.java
Table Model Tests
Minor updates

-Update documentation on RequirementManger.java
-Finish cleaning RequirementManagerTest.java
Updated Table Model Tests

Added more tests
observer commented