GET params to polymorphic_url

Usually to add get params to url we need to write whole path:
```ruby
link_to "Edit", edit_client_unit_path(@client, @unit, type: "wheel")
#=> /client/1/unit/2/edit?type=wheel
```

While it looks more naturally to use cool polymorphic style:
```ruby
link_to "Edit", [:edit, @client, @unit, type: "wheel"]
#=> /client/1/unit/2/edit?type=wheel
```