Mafia: Fix for Inspect/Convert

For some reason, variables are not being reset during 'for' loops, which
is causing some errors. Setting them to null so it won't check a value
from a previous loop.
Mafia: Changes to /priority

Text for /priority is now generated when the theme is loaded.
Also allows the use of a 'hide' property on night actions to hide them
from /priority
Checking value too
Merge pull request #213 from IceKirby/master

Mafia: Fix for inspect/convert errors