KRACOEUS-7091: removing junk comments, fixing log statements

This pull request is really large but changes very little actual code. There is only two types of changes in this commit are:

1) removing junk comments like "This method does..." and "This class does..."
2) fixing log statements where we were doing things like e.printStacktrace();

I decided to do this mass javadoc style cleanup all at once because this stuff was getting fixed piece by piece but created a lot of noise in PR & and PR reviews.