more updates to Tails and SVS directions
more updates to Tails and SVS directions

Added instructions for setting up persistent storage

fixed some typos in the tails section

on the SVS setup, clarified some of the language when creating the SVS keys

added instructions for admin to connect to the Internet
pwplus/securedrop,jrosco/securedrop,jaseg/securedrop,harlo/securedrop,kelcecil/securedrop,ageis/securedrop,pwplus/securedrop,ehartsuyker/securedrop,jeann2013/securedrop,chadmiller/securedrop,conorsch/securedrop,conorsch/securedrop,harlo/securedrop,ageis/securedrop,jeann2013/securedrop,jeann2013/securedrop,jrosco/securedrop,GabeIsman/securedrop,jaseg/securedrop,harlo/securedrop,jaseg/securedrop,garrettr/securedrop,jaseg/securedrop,ageis/securedrop,garrettr/securedrop,ehartsuyker/securedrop,kelcecil/securedrop,chadmiller/securedrop,jrosco/securedrop,garrettr/securedrop,conorsch/securedrop,GabeIsman/securedrop,kelcecil/securedrop,pwplus/securedrop,jrosco/securedrop,micahflee/securedrop,kelcecil/securedrop,pwplus/securedrop,chadmiller/securedrop,micahflee/securedrop,ehartsuyker/securedrop,jeann2013/securedrop,heartsucker/securedrop,GabeIsman/securedrop,harlo/securedrop,pwplus/securedrop,conorsch/securedrop,chadmiller/securedrop,chadmiller/securedrop,jrosco/securedrop,heartsucker/securedrop,jaseg/securedrop,heartsucker/securedrop,kelcecil/securedrop,GabeIsman/securedrop,jaseg/securedrop,heartsucker/securedrop,ehartsuyker/securedrop,conorsch/securedrop,ageis/securedrop,jeann2013/securedrop,harlo/securedrop,pwplus/securedrop,ehartsuyker/securedrop,jrosco/securedrop,micahflee/securedrop,harlo/securedrop,jeann2013/securedrop,ehartsuyker/securedrop,chadmiller/securedrop,garrettr/securedrop,micahflee/securedrop,kelcecil/securedrop,GabeIsman/securedrop,GabeIsman/securedrop,heartsucker/securedrop