Deploy GitBook with giscuss

[jeffabailey]

• Make the index list of of GQMs work properly
• Update the mermaid graph to link to mdBook for GQMs.

[yenk]

@jeffabailey - there's an upgrade and will work on this to integrate it.

[jeffabailey]

Deployed here: https://innersourcecommons.github.io/managing-innersource-projects/

Looking for feedback.