EventON - Event Tickets 2.4

ADDED: Ability to enter information sent via ticket confirmation email to attendees
FIXED: is required field text not translated in checkout page

FIXED: sprintf translation error in event edit tickets section
FIXED: additional ticket info text error message not translating
UPDATED: all events in wp-admin tickets enabled display

ADDED: Filter to support additional ticekt holder information at checkout
ADDED: repeat intervals for separate stock to show repeat interval index next to date
ADDED: trumbowyg texteditor for emailing attendees
FIXED: get_id() on bool error on class-integration-woocommerce.php:975
FIXED: tax included price for tickets not reflecting correct on event card