[FrameworkBundle] Added creation of folder translation if it does not exist

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | yes
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | ~
| License       | MIT
| Doc PR        | ~

Before:
![capture d ecran 2014-12-16 a 23 05 45](https://cloud.githubusercontent.com/assets/667519/5462962/d711e2fa-8578-11e4-8af1-a8ffdcf1b065.png)

After:
![capture d ecran 2014-12-16 a 23 09 09](https://cloud.githubusercontent.com/assets/667519/5462964/dbc6edae-8578-11e4-81c3-f950d975fcd4.png)