Ported allies-03a

~~Could someone confirm, that I used the correct videos, please?~~

Three things left:
- the engineer is still glitchy
- produced units now group before attacking (easy to shoot)
- should I add sth here (e.g. reinforcements)?
![03aquestion](https://cloud.githubusercontent.com/assets/7704140/4693758/00de453e-57ab-11e4-8fa3-b5687088aed3.png)