Dev-freeze map pipe fixes

Replaces round-start broken piping with endcaps, lines up atmos UPAs.

![screenshot 2014-12-13 21 00 40](https://cloud.githubusercontent.com/assets/242428/5426110/d464657a-830a-11e4-8909-02dccce9c495.png)
![screenshot 2014-12-13 21 00 45](https://cloud.githubusercontent.com/assets/242428/5426111/d46fe620-830a-11e4-8d13-99f4162f1098.png)