Clarification of commas a bit more.

* Don't add a space when adding a newline... this just makes things messy if an editor doesn't support `.editorconfig`
* Separate out Comma Separator from Comma Operator
* Remove the `var statements` from Comma Separator *(plus it's an operator btw)* because we don't currently allow that under [Variable Declarations](https://github.com/OpenUserJs/OpenUserJS.org/blob/master/STYLEGUIDE.md#variable-declarations) and can confuse contributors.

Applies to #19

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Auto-merge
> Absolutely no ... CoffeeScript under any circumstances.

LOL okay but I think I'll substitute your colorful metaphor with something else. ;)

> Perhaps a dumb question, but when do you use commas in a `for` statement?

Perhaps in array optimization or reversals... **I didn't write this part** and the below example is **not** how I do things in my code with these sort of things. :)
``` javascript
var someIndex = null;
var someIndexMax = null;
var someArray = [ "one", "two", "three" ];

for (someIndex = 0, someIndexMax = someArray.length - 1; someIndex < someIndexMax; someIndex--) {
  // Do something
}
```