Symlink Checks Complete, and Securitah

Implementation of Substitution checks complete.

Refactored the unit tests to accomodate extending for new types of tests.

It does what I need.

On the Securitah front and the respecting of it, our designated Security Pope of Usually Accurate Feedback has decided that we need HSTS for all blogs and repos and wants to bring in PGP signing on the packages.  I think the PGP is overkill if we have HSTS and package manifests that include the md5sum.  We’ll be dueling and whichever one of us survives gets their design in the next phase.