Updates/genesis 32

[dreamwhisper]

Based on updates/wordpress-53 branch.

Summary of change:

• Sets post meta on theme activation
• Allows footer widgets to be used on landing page template
• Sets post meta to hide footer widgets on imported landing page

Have the changes in this PR been added to the documentation for this project?

n/a

How to test:

• Change the post meta (before and after) to something other than default.
• Activate the theme using the updates/genesis-32 branch.
• Verify the post meta are set as the default genesis meta.
• Using a landing page template, test that footer widgets display if not hidden with the checkbox setting in the genesis sidebar.
• When importing the theme content, test that the footer widgets do not display on the imported landing page.

Suggested Changelog Entry:

See Changelog entries.