sonata-project/SonataAdminBundle — pull request #735 by havvg (2012-05-04 09:18:18+00:00)
Title: allow multiple filter type tags

This allows multiple tags to assign types with the filter class.

For example:

```yaml
services:
sonata.admin.propel.filter.type.string:
class: Sonata\PropelAdminBundle\Filter\StringFilter
tags:
- { name: 'sonata.admin.filter.type', alias: 'propel_string' }
- { name: 'sonata.admin.filter.type', alias: 'propel_varchar' }
- { name: 'sonata.admin.filter.type', alias: 'propel_longvarchar' }
- { name: 'sonata.admin.filter.type', alias: 'propel_text' }
```