Snowman 2.X: Separate unit testing per file

[videlais]

Previously, all unit testing was part of a single index.js file. This was far from efficient or well-organized. Each unit should be in its own file.

Current work:

• [X] Separated Misc.js
  • [X] Created test/Misc.test.js and copied tests.
  • [ ] Misc functions should not directly bind to global window
  • [X] Separated Misc functions into new files
  • [ ] Created new Misc testing on a per function basis
  • [X] Separated Passage.js
  • [X] Created 'test/Passage.test.js` and copied tests.
  • [X] Tests currently pass
  • [X] Separated Story.js
  • [X] Created 'test/Story.test.js` and copied tests.
  • [ ] Tests currently pass