Adjust admin styles
Remove team from venue hierarchy only
Full-width shortcodes in admin
Add blank option in staff details
Update sport presets
Update welcome screen to show video and links
Display line above admin table footer
Load responsive video script in admin
Display performance icons in admin
Default sport to custom
Fix text options for i18n
Update Japanese translations
Update title, tags, and include video in readme
Preset inserts sample teams, players, and events