feat(auth), arch(requirejs)

[leostera]

feat(auth): Auth system. Closes #22. arch(requirejs): Implemented RequireJS. Closes #21.

Might need some more docblocks.

[leostera]

PR Checklist (Minor|Major Feature)

• [x] Feature improves existing core functionality
• [ ] API is compatible with existing APIs and relevant standards (if applicable)
• [ ] PR doesn't contain a breaking change
• [ ] PR contains unit tests
• [ ] PR contains integration tests (if suitable)
• [x] PR contains documentation update
• [x] PR is rebased against recent master
• [x] PR is squashed into one commit per logical change
• [x] PR's commit messages are descriptive and allows us to autogenerate release notes (required commit message format)
• [x] All changes requested in review have been implemented