Fixed possible variable name collision in helpers.js

[TheRedBlueCube3]

The makeEnum function declares another "enums" variable which is a bad idea for code. I renamed it to enumInProgress because the name fits and doesn't collide.
Snippet where bug originally was:

// helpers.js
// line 1
var enums = {};
function makeEnum(vars) {
	var enums = {}; // bug here and every other instance of enums in this function
	for(var i = 0; i < vars.length; i++) {
		enums[vars[i]] = i;
	}
	return enums;
}

[TheRedBlueCube3]

Update: It's not a bug, it's more of a code understanding issue. IDEs may still go wrong though.