Unobfuscate selected strings

[MrPlayerYork]

It would be cool to have a little more control over what is obfuscated and what isn't.

for example, if you have a trigger scoreboard objective, maybe obfuscating that wouldn't be the best course of action cause then people would be /trigger 'ing a random scoreboard instead of what you want.

[revonzev]

I've added a way to disable auto obfuscation for scoreboard objectives v2.4.0 #13