Complete the page "Consensus Building"

[zport]

Add details on the Consensus Building page.

[adammontville]

See: https://oval-community-guidelines.readthedocs.io/en/latest/proposal-process/consensus-building.html (Should be done building shortly.)

Please offer any comments/suggestions on this issue.

[zport]

Suggestions from Tuesday (8/14) meeting:

• responsibility misspelled (under How To, paragraph 3)
• change "GitHub issue" to "issue and pull request"
• add in section or more details on mechanics for Area Supervisors
• fix footnote link in body

[adammontville]

Updated the "How To" section: https://oval-community-guidelines.readthedocs.io/en/latest/proposal-process/consensus-building.html