Clean, comment and format base files

Formatted original cartridge files and cleaned up uneeded files. The
cartridge still has original functionality.

  - Fixes env var double slashes
  - Annotates and formats control scripts
  - Formats and consolidate node_context into util script
  - Create manifest.yml (from rhel version) and set Source-Url to the
    version 0.0.1 archive url
  - Adds version to README.md