Installer review / finalize / test

[ryanlabelle]

• [x] Installer - Review Customize Screen
• [x] Installer - Review Support Screen
• [x] Installer - Add Starter Video?
• [x] Installer - Review Ready Screen
• [x] Installer - Test full import (Template Pages and Template Panels).
• [x] Not importing “post_format” found using the get_post_format() function. I think this is stored in a relational way in the DB. wp_posts -> wp_term_relationships <- wp_terms.
• [x] Not importing _wp_page_template inside the wp_postmeta table isn’t coming over during import. This stores the page template as a meta_value.
• [x] Need to replace default content labels, and descriptions.
• [x] Default customizer options.
• [x] Auto check default content options.