Fixes

• Prevent potential fatal errors by passing the currency object to the context for the tickets footer template in the Attendee Registration mini cart in all cases. [ETP-629]
• Multiple shortcodes [tribe_tickets post_id="ID"] in a single page will now properly work with Modal and adding to cart. [ETP-627]
• 2 new strings added, 3 updated, 0 fuzzied, and 2 obsoleted