Multiline comments causing minified ftwtable.extjs.js to be garbled

The [multiline comments](https://github.com/4teamwork/ftw.table/pull/32/files#diff-5ed6b3580f1dd59efed5e412a88b3b34R3) introduced in https://github.com/4teamwork/ftw.table/pull/32 at the top of `ftwtable.extjs.js` seem to cause the minified version of the file to be screwed up:

`resourceftwtable.extjs-cachekey-eb5a4be5f1871762c8d31548f57690d1.js`:

```javascript
/* - ++resource++ftwtable.extjs.js - */
// http://localhost:8080/Plone/portal_javascripts/++resource++ftwtable.extjs.js?original=1
Ext.Ajax.timeout=120000}else{var isSelected=this.isSelected(rowIndex);
```
 That first closing bracket `}` is invalid because it was never opened, and after `Ext.Ajax.timeout=120000` random stuff seems to have been dropped from the source JS.