Case-insensitive server console commands/settings

[ToeKneeRED]

This was previously mentioned in the discord but server console commands should be case-insensitive.
To preserve their capitalization, I decided against saving commands/settings as all lowercase so the /help command would look nicer than many completely lowercase command/setting names.
ex.

• /set gameserver:spassword pass
• /UPTIME

It also adds another expected option to BoolifyString.

[Force67]

std::string data = "Abc";
std::transform(data.begin(), data.end(), data.begin(),
[](unsigned char c){ return std::tolower(c); });