added xvfb to rc.d via update-rc.d
added xvfb to rc.d via update-rc.d

GabeIsman/securedrop,garrettr/securedrop,jeann2013/securedrop,heartsucker/securedrop,GabeIsman/securedrop,jrosco/securedrop,micahflee/securedrop,chadmiller/securedrop,kelcecil/securedrop,jrosco/securedrop,jeann2013/securedrop,harlo/securedrop,jaseg/securedrop,ehartsuyker/securedrop,heartsucker/securedrop,GabeIsman/securedrop,heartsucker/securedrop,jaseg/securedrop,pwplus/securedrop,conorsch/securedrop,chadmiller/securedrop,kelcecil/securedrop,GabeIsman/securedrop,jaseg/securedrop,harlo/securedrop,jrosco/securedrop,conorsch/securedrop,chadmiller/securedrop,ehartsuyker/securedrop,ehartsuyker/securedrop,kelcecil/securedrop,heartsucker/securedrop,ehartsuyker/securedrop,jaseg/securedrop,ehartsuyker/securedrop,jaseg/securedrop,harlo/securedrop,ageis/securedrop,heartsucker/securedrop,pwplus/securedrop,conorsch/securedrop,ageis/securedrop,harlo/securedrop,conorsch/securedrop,GabeIsman/securedrop,chadmiller/securedrop,kelcecil/securedrop,jeann2013/securedrop,kelcecil/securedrop,pwplus/securedrop,harlo/securedrop,pwplus/securedrop,jrosco/securedrop,harlo/securedrop,ageis/securedrop,garrettr/securedrop,jrosco/securedrop,garrettr/securedrop,chadmiller/securedrop,jaseg/securedrop,jeann2013/securedrop,pwplus/securedrop,GabeIsman/securedrop,chadmiller/securedrop,pwplus/securedrop,ehartsuyker/securedrop,micahflee/securedrop,kelcecil/securedrop,micahflee/securedrop,jeann2013/securedrop,micahflee/securedrop,jeann2013/securedrop,jrosco/securedrop,conorsch/securedrop,ageis/securedrop,garrettr/securedrop