Reva: Login/Logout

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| '_ \   / /\ \    / /\ \    / /\ \  \__, ||__   _||  __|  |___ \ 
| (_) | / ____ \  / ____ \  / ____ \   / /    | |  | |____  ___) |
 \___/ /_/    \_\/_/    \_\/_/    \_\ /_/     |_|  |______||____/