Update documentation front page text

[micahellison]

This PR changes the feature blurbs and console examples on the front page of the docs site. Fixes #1622.

• Using more of a 2020s style than 2010s
• Changing brand references to be more generic
• Trying to use a more inclusive tone
• Not taunting security agencies

Checklist

• I have read the contributing doc.
• I have included a link to the relevant issue number.
• I have checked to ensure there aren't other open pull requests
  for the same issue.
• I have written new tests for these changes, as needed.

[wren]

lgtm

Thank you!