[BUGFIX] fixed dependency issue and routes issue

__Tasks:__
- [x] done
- [x] got feedback

__Informations:__

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | yes
| Tests pass?   | no because of dependency to sales core ('sulu_sales_core.routes' is missing in config)
| Fixed tickets | none
| Doc           | none

__Requires:__
- https://github.com/sulu-cmf/SuluSalesCoreBundle/pull/13
- https://github.com/sulu-cmf/SuluSalesOrderBundle/pull/13