Code standards cleanup

- get rid of functions that are only called once
- move all utils functions to one /utils directory
- re-order code to meet eslint:[react/sort-comp](https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/sort-comp.md) requirements
```
Ordering for React.createClass: eslint: react/sort-comp

displayName
propTypes
contextTypes
childContextTypes
mixins
statics
defaultProps
getDefaultProps
getInitialState
getChildContext
componentWillMount
componentDidMount
componentWillReceiveProps
shouldComponentUpdate
componentWillUpdate
componentDidUpdate
componentWillUnmount
clickHandlers or eventHandlers like onClickSubmit() or onChangeDescription()
getter methods for render like getSelectReason() or getFooterContent()
optional render methods like renderNavigation() or renderProfilePicture()
render```