(issue #3900) add jshint (and csslint) to devDep
(issue #3900) add jshint (and csslint) to devDep

mrvisser/3akai-ux,timdegroote/3akai-ux,timdegroote/3akai-ux,mrvisser/3akai-ux,jfederico/3akai-ux,stuartf/3akai-ux,timdegroote/3akai-ux,simong/3akai-ux,nicolaasmatthijs/3akai-ux,nicolaasmatthijs/3akai-ux,simong/3akai-ux,stuartf/3akai-ux,simong/3akai-ux,Orodan/3akai-ux-jitsi-fork,nicolaasmatthijs/3akai-ux,Orodan/3akai-ux,jfederico/3akai-ux,jfederico/3akai-ux,Orodan/3akai-ux-jitsi-fork,Orodan/3akai-ux-jitsi-fork,Orodan/3akai-ux,stuartf/3akai-ux,mrvisser/3akai-ux,Orodan/3akai-ux