Add modules and rc config script

* Provide two directories
    - etc/              config files
    - modules/          all modules
    - modules/files     libraries
    - modules/profiles  custom profiles

* You have to source feelpprc.sh as shown in the readme and reconnect.
* Just type `module avail` and check the last lines. You should see
  the new modules and profiles under the full path.

Enjoy it!

TODO: fix some bugs
prefer module purge to empty all modules.
module unload bugs for now (see issues).