Update user_manual.md WaPo
Update user_manual.md WaPo

Just spent two hours running through the process with WaPo journalists and there were several updates I needed to make to the documentation, as the current version did not make any sense. Apologies if I fucked up the Github process. I promise to learn the right way next week!
jrosco/securedrop,conorsch/securedrop,micahflee/securedrop,GabeIsman/securedrop,pwplus/securedrop,pwplus/securedrop,ageis/securedrop,harlo/securedrop,pwplus/securedrop,jaseg/securedrop,jaseg/securedrop,jeann2013/securedrop,kelcecil/securedrop,kelcecil/securedrop,chadmiller/securedrop,harlo/securedrop,GabeIsman/securedrop,GabeIsman/securedrop,pwplus/securedrop,jrosco/securedrop,harlo/securedrop,chadmiller/securedrop,chadmiller/securedrop,harlo/securedrop,chadmiller/securedrop,kelcecil/securedrop,garrettr/securedrop,GabeIsman/securedrop,ehartsuyker/securedrop,conorsch/securedrop,GabeIsman/securedrop,jrosco/securedrop,micahflee/securedrop,jeann2013/securedrop,jrosco/securedrop,ehartsuyker/securedrop,jeann2013/securedrop,ehartsuyker/securedrop,micahflee/securedrop,jrosco/securedrop,conorsch/securedrop,GabeIsman/securedrop,jeann2013/securedrop,conorsch/securedrop,heartsucker/securedrop,heartsucker/securedrop,heartsucker/securedrop,jaseg/securedrop,kelcecil/securedrop,ageis/securedrop,heartsucker/securedrop,ageis/securedrop,heartsucker/securedrop,garrettr/securedrop,pwplus/securedrop,kelcecil/securedrop,jeann2013/securedrop,chadmiller/securedrop,conorsch/securedrop,garrettr/securedrop,jaseg/securedrop,ehartsuyker/securedrop,ehartsuyker/securedrop,jrosco/securedrop,micahflee/securedrop,pwplus/securedrop,jaseg/securedrop,jaseg/securedrop,harlo/securedrop,harlo/securedrop,ageis/securedrop,ehartsuyker/securedrop,kelcecil/securedrop,garrettr/securedrop,jeann2013/securedrop,chadmiller/securedrop