reformat "folder" and "shared with" table items

Other solution than https://github.com/calmh/syncthing/pull/300 using white-space:nowrap;

Looks like this:
![syncthing_reformat_column2](https://cloud.githubusercontent.com/assets/71315/3089287/3ba6ff8a-e57d-11e3-832b-d52a0f60b2d7.png)