[api] Ensure all responses in director.http.* inherit from Error
[api] Ensure all responses in director.http.* inherit from Error

pandoraui/director,vitalsource/director,flatiron/director,andradedev/director,GerHobbelt/director,stonegithubs/director,mylikes/director,meleslilijing/director,fadeit/director,apeace/director,cpg1111/director,webx32/director,cpg1111/director,maxogden/director,vitalsource/director,pocketjoso/director,lzhengms/director,kiritoe/director,pandoraui/director,kiritoe/director,noxryan/director,tanzhihang/director,meleslilijing/director,fadeit/director,ks3dev/director,lzhengms/director,stonegithubs/director,sheldonzf/director,sheldonzf/director,ks3dev/director,tanzhihang/director,mylikes/director,webx32/director,andradedev/director,pocketjoso/director,GerHobbelt/director