more fixes/improvements to ubuntu setup script
more fixes/improvements to ubuntu setup script

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