Change the OBFUSCATE datastore option to JsObfuscate

This PR changes the OBFUSCATE datastore option to JsObfuscate.

## Verification Steps:

It's kind of tricky to verify this kind of stuff, but I suggest the following:

- [ ] Make sure ```js_obfuscate``` is used
- [ ] Make sure ```to_s``` to is used after ```js_obfuscate``` to make sure you always get the obfuscated javascript
- [ ] If you can actually test the module, feel free to do so. Pick as many as you want.
- [ ] If you can't test the module, you can try to run it, and see that it still gives you the obfuscated string, and not something else. Pick as many as you want.


These are all unnecessary. Interpolation calls `to_s` implicitly
```
2.0.0-p481 :001 > class Foo; def to_s; 'bar'; end;end; "#{Foo.new}"
 => "bar" 
```