Update command system

[MrLotU]

Update command system to accept a command both when it's spelled like this: !command but also if you were to throw in some random caps like this: !cOMMand also works when you .register a command, can put in both bot.register("coMMand") and bot.register("command")

[Azoy]

Few things here that I see

1. Needs to compile
2. Use 2 space tabs
3. You're not guaranteed that someone registered their command using all lowercase

[MrLotU]

1. I figured that out, working on that now
2. /tableflip
3. What do you mean?

[MrLotU]

Just seeing if it works now, I'll fix indention in a bit

[MrLotU]

Need to do more local testing of the handle() method, I'll reopen once that's fixed