April 21 2nd maintenance

Here is the list of changes implemented with the server restart of April 21:

• Fixed a bug where players could revive others twice by holding the Revive key
• Fixed a bug where Talent effects could be stacked by repeatedly switching the equipped weapon. This should also resolve the recent server instability that was due to the increased traffic generated by this bug.

• 부활 시 부활키를 누르고 있으면 부활을 두번하던 버그 수정
• 무기특성 중첩 버그 수정

1:45분 부터 30분 정도 소요예정.