Enh: Pep8 - daterange.py
Enh: Pep8 - daterange.py

ddurieux/alignak,rednach/krill,KerkhoffTechnologies/shinken,staute/shinken_package,ddurieux/alignak,rledisez/shinken,savoirfairelinux/shinken,savoirfairelinux/shinken,gst/alignak,fpeyre/shinken,dfranco/shinken,naparuba/shinken,titilambert/alignak,fpeyre/shinken,dfranco/shinken,fpeyre/shinken,mohierf/shinken,rednach/krill,staute/shinken_package,staute/shinken_deb,titilambert/alignak,Simage/shinken,dfranco/shinken,gst/alignak,geektophe/shinken,staute/shinken_package,staute/shinken_package,fpeyre/shinken,rledisez/shinken,savoirfairelinux/shinken,Simage/shinken,Simage/shinken,tal-nino/shinken,savoirfairelinux/shinken,peeyush-tm/shinken,lets-software/shinken,geektophe/shinken,Alignak-monitoring/alignak,lets-software/shinken,titilambert/alignak,savoirfairelinux/shinken,naparuba/shinken,Aimage/shinken,claneys/shinken,lets-software/shinken,geektophe/shinken,lets-software/shinken,naparuba/shinken,staute/shinken_deb,peeyush-tm/shinken,mohierf/shinken,staute/shinken_deb,claneys/shinken,dfranco/shinken,claneys/shinken,peeyush-tm/shinken,fpeyre/shinken,rednach/krill,fpeyre/shinken,lets-software/shinken,dfranco/shinken,Simage/shinken,mohierf/shinken,naparuba/shinken,tal-nino/shinken,mohierf/shinken,staute/shinken_deb,ddurieux/alignak,geektophe/shinken,Aimage/shinken,geektophe/shinken,tal-nino/shinken,KerkhoffTechnologies/shinken,Aimage/shinken,peeyush-tm/shinken,savoirfairelinux/shinken,staute/shinken_package,rledisez/shinken,Simage/shinken,tal-nino/shinken,claneys/shinken,tal-nino/shinken,ddurieux/alignak,staute/shinken_package,gst/alignak,titilambert/alignak,Aimage/shinken,Aimage/shinken,KerkhoffTechnologies/shinken,staute/shinken_deb,geektophe/shinken,Alignak-monitoring/alignak,rledisez/shinken,KerkhoffTechnologies/shinken,naparuba/shinken,KerkhoffTechnologies/shinken,KerkhoffTechnologies/shinken,tal-nino/shinken,mohierf/shinken,dfranco/shinken,claneys/shinken,rednach/krill,ddurieux/alignak,ddurieux/alignak,rednach/krill,gst/alignak,staute/shinken_deb,rledisez/shinken,naparuba/shinken,claneys/shinken,rednach/krill,peeyush-tm/shinken,lets-software/shinken,Aimage/shinken,Simage/shinken,rledisez/shinken,peeyush-tm/shinken,mohierf/shinken