Added missing german translation for Available and Pending.

The 0.9 release is missing german translations for the new states "Available" and "Pending".

This PR provides corresponding translations. 

I would like to get some Feedback from other native speakers which word would be the best translation of "Pending".

Candidates in my opinion:
* anstehend
* schwebend
* bevorstehend
* eingehend

![missing-translation](https://cloud.githubusercontent.com/assets/559823/2555352/c23f8538-b6bd-11e3-91c5-33d44832558c.png)