Simulate session logout in test_reply
Simulate session logout in test_reply

Realistically, clients will clear sessions between submitting
docs / checking for replies, so we should simulate that.
test.py will now fail before 195d0ef and pass after, as
expected.

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