Make tees and dist markers relative to width. Add padding

Bellow I attached pictures in different sizes, so you can see a difference (or rather not much difference).

![screenshot 2014-06-12 18 22 45](https://cloud.githubusercontent.com/assets/2392131/3260572/763e390e-f24f-11e3-967e-ac7d1e8114e4.png)
![screenshot 2014-06-12 18 23 06](https://cloud.githubusercontent.com/assets/2392131/3260573/7652c8d8-f24f-11e3-9cf8-bbceb0656e0a.png)
![screenshot 2014-06-12 18 24 40](https://cloud.githubusercontent.com/assets/2392131/3260575/76637728-f24f-11e3-8e7b-8837f24b822b.png)
![screenshot 2014-06-12 18 24 52](https://cloud.githubusercontent.com/assets/2392131/3260574/766290ba-f24f-11e3-9053-3ed9d64bc905.png)