Moved _component.json -> _bower.json & JSHint indent stuff

I think I can finally explain [that embarrassing PR](https://github.com/yeoman/generator-webapp/pull/69) from a few days ago! I remembered seeing the JSHint file specifying `indent: 2`, but having an extra indent. I corrected it in the wrong place, like a darn fool!

The other thing in this commit is just changing _component.json to _bower.json.