fix(Menu): I type "&" to name of Menu.Item but it is not show

[ChampyW]

Steps to Reproduce

1. I type "&" to attribute name e.g. name={'Black & White'}.

Expected
Text in Menu item must show "&".

Result
Text in Menu item is not show "&"

Testcase
If the docs show the issue, use: https://react.semantic-ui.com/collections/menu#menu-example-colored
Otherwise, fork this to get started: http://codepen.io/levithomason/pen/ZpBaJX

[wangyueming]

Using content={'Black & White'} rather than name={'Black & White'} works, tested on version 0.71.0.

[levithomason]

Indeed. The if no content is provided then we _.startCase the name and use that for the content. This method removes special characters.

See #1340 (comment).