Fix caps logic in wp_admin_bar_appearance_menu(). Show Themes on either...

Fix caps logic in wp_admin_bar_appearance_menu(). Show Themes on either switch_themes or edit_theme_options, and the rest of the appearance items on edit_theme_options. Fixes #19150.


git-svn-id: https://core.svn.wordpress.org/trunk@19153 1a063a9b-81f0-0310-95a4-ce76da25c4cd