Update to event start/end dates

Thank you for playing

Starting from Thursday, 10/17, general events, arena, and daily quests will start immediately after maintenance on Thursdays and end before maintenance starts the following Thursday. This way, users can begin enjoying the events immediately following maintenance.

* Events that are currently running such as FFII: Castle Palamecia - Exploration, FFII: The Cyclone, Wild Rose Firion Unit Intro Quest, and FFII Step-Up Summon will still end on Friday, 10/18 00:59 PDT.
** The current arena season will last only for 6 days (Friday, 10/11 01:00 - Thursday, 10/16 PDT start of maintenance) to accommodate the start date of the new arena season on 10/17.