Add conditionals

[rabdill]

"if" statements that can be inserted at points where actions would normally just be taken without checking for anything.

Will probably have to be in FRONT of the thing in question:

if : {
    "condition" : [thing blabla],
    "execute" : {
    }
}

rather than in-line with the thing:

"actions" : {
    "if" : [blablah],
    "fart" : {
        "loud" : {}
    }
}

Because we'd have to allow for "else" statements. Possibly this, if we do it in line:

"actions" : {
    "if" : [blablah],
    "fart" : {
        "loud" : {}
    }
    "else" : { zzzzzzz
    }
}

But if this is the case, what is "zzzzzz"? Just a change to implement, or an action to take?