Added new Summit fields
'schedule_default_page_url' => 'nullable|string',
'schedule_default_event_detail_url' => 'nullable|string',
'schedule_og_site_name' => 'nullable|string',
'schedule_og_image_url' => 'nullable|string',
'schedule_og_image_secure_url' => 'nullable|string',
'schedule_og_image_width' => 'nullable|integer',
'schedule_og_image_height' => 'nullable|integer',
'schedule_facebook_app_id' => 'nullable|string',
'schedule_ios_app_name' => 'nullable|string',
'schedule_ios_app_store_id' => 'nullable|string',
'schedule_ios_app_custom_schema' => 'nullable|string',
'schedule_android_app_name' => 'nullable|string',
'schedule_android_app_package' => 'nullable|string',
'schedule_android_custom_schema' => 'nullable|string',
'schedule_twitter_app_name' => 'nullable|string',
'schedule_twitter_text' => 'nullable|string',
Change-Id: I4d539031b2acd8b59bd46da7640a8f9ef25911c2
b4d9655025