Fix `fab setup_deps`
Fix `fab setup_deps`

For some reason grunt is installed to `node_modules/.bin/..` which is
not in PATH even though the nodeenv is used.

indico/indico,pferreir/indico,mvidalgarcia/indico,OmeGak/indico,DirkHoffmann/indico,OmeGak/indico,mic4ael/indico,DirkHoffmann/indico,DirkHoffmann/indico,indico/indico,OmeGak/indico,mic4ael/indico,ThiefMaster/indico,ThiefMaster/indico,pferreir/indico,indico/indico,ThiefMaster/indico,mvidalgarcia/indico,mvidalgarcia/indico,pferreir/indico,DirkHoffmann/indico,OmeGak/indico,pferreir/indico,mic4ael/indico,indico/indico,mic4ael/indico,mvidalgarcia/indico,ThiefMaster/indico