Use the new array syntax for clike and coffeescript

This patch uses the new array syntax for the `clike` language and for  `coffeescript`. For `clike` it fixes a minor bug, whereby The character immediately in front of a single line comment is highlighted as a comment as well.

```js
something// something
```

This is because both definitions for single and multiline comments have to be matched with a single regex and the `lookbehind` parameter can only be applied to the first captured string.
    
For `coffeescript` the previously used `block-comment` token name is no longer necessary.