Nth PR on develop branch for easybuild-docs, for N=6


Hi @boegel, @stdweird,

I think the new structure is better visible at this point; can you validate?
Best way to visualise it is this one: http://easybuild-docs.readthedocs.org/en/develop/
However, giving the feedback in github style over here would help it advance faster, I guess...
trim the output to only show 3 easyconfigs (including the one you're going to use)?

```
[...]
   * $CFGS1/WRF-3.5-ictce-5.3.0-dmpar.eb
   * $CFGS1/WRF-3.5.1-goolf-1.4.10-dmpar.eb
   * $CFGS1/WRF-3.5.1-goolf-1.5.14-dmpar.eb
[...]
```