Update strings.conf

the str1 of 15582767 in cards.cdb is modified

Immune effect of Qli monsters, revised

fix EFFECT_NECRO_VALLEY

set base atk/def

display number of pendulum in extra deck

fix changing target of Mask Change

except the turn this card was sent to the Graveyard

current settings:
1. EVENT_TO_GRAVE is not triggered if the card is returned to grave.
2. in effect::is_activateable()
EFFECT_TYPE_SINGLE + EVENT_TO_GRAVE/EVENT_DESTROYED/EVENT_SPSUMMON_SUCCESS/EVENT_TO_HAND can be activated in damage step by default

fix Relay Soul

fix Cyberdark

fix Starduston

fix Train Connection

PSY frame