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...
more trimming:

```
$ eb HPL-2.0-goolf-1.4.10.eb
[...]
== building and installing GCC/4.7.2...
[...]
== building and installing goolf/1.4.10...
[...]
== building and installing HPL/2.0-goolf-1.4.10...
+  == fetching files...
+  == creating build dir, resetting environment...
+  == unpacking...
+  == patching...
+  == preparing...
+  == configuring...
+  == building...
+  == testing...
+  == installing...
+  == taking care of extensions...
+  == packaging...
+  == postprocessing...
+  == sanity checking...
+  == cleaning up...
+  == creating module...
+  == COMPLETED: Installation ended successfully
+  == Results of the build can be found in the log file /home/example/.local/easybuild/software/HPL/2.0-goolf-1.4.10/easybuild/easybuild-HPL-2.0-20141031.223237.log
+  == Build succeeded for 9 out of 9
+  == temporary log file /tmp/easybuild-UOEWix/easybuild-NiswcV.log has been removed.
+  == temporary directory /tmp/easybuild-UOEWix has been removed.
```