ref #12
In a template, you can now allow rendering of a block from other bundle.
The layout template must explicitly call the rendering of other block,
with the twig function
```
chill_delegated_block('block_name', { 'array' : 'with context' } )
```
This will launch an event
`Chill\MainBundle\Templating\Events\DelegatedBlockRenderingEvent` with
the event's name 'chill_block.block_name'.
You may add content to the page using the function
`DelegatedBlockRenderingEvent::addContent`.
The twig filter is localize_translatable_string
Example : {{ person.nationality|localize_translatable_string }}
The helper may be called with $container->get('chill.main.helper.translatable_string'). The main function is ->localize(array $strings)
Example:
$container->get('chill.main.helper.translatable_string')->localize($country->getName()); #return the name in current locale
close#299
