bashrc: PS update

Signed-off-by: Adrian-Tudor Panescu <adrian@panescu.com>
CERN custom configuration

Signed-off-by: Adrian-Tudor Panescu <adrian.tudor.panescu@cern.ch>
bashrc: new Invenio exports

Signed-off-by: Adrian-Tudor Panescu <adrian.tudor.panescu@cern.ch>
bash_aliases: invenio-devscripts removal

Signed-off-by: Adrian-Tudor Panescu <adrian.tudor.panescu@cern.ch>