fix self destruct condition

facedown monsters will cause self destruction
fix ghostrick field spells

fixed interaction with immune monsters (Horus lv6, forbidden lance)
fix

now properly allows opponent monsters to attack directly
Update strings.conf

错别字改正
fix
Merge pull request #925 from sidschingis/patch2

fix self destruct condition
Merge pull request #927 from sidschingis/patch

fix ghostrick field spells
fix
merge