Chombo and BISICLES easyconfigs

Needs https://github.com/hpcugent/easybuild-easyblocks/pull/464 
include a comment on how to obtain the sources (after registering):

```
svn --username USERNAME co -r 21908 https://anag-repo.lbl.gov/svn/Chombo/release/3.2 Chombo-3.2-21908
```