Logout+User

=__Logout User:__=
 * Synopsis:** An anonymous user wishes to log out of Faceplace, such that their information is not made public, and they no longer a logged in user.


 * Actor/User**:Faceplace user


 * Preconditions:** The user is already logged in. 

1. The user clicks a visible "Logout" button. 2. The user is presented with a prompt verifying that they wish to log out.(See Rainy Case #1) 3. The user clicks the visible button to verify that they wish to log out. 4. The user is then presented with a screen informing them that they are logged out, and then re-prompted to log-in before continuing any further.
 * Sunny Day Case:**

1. The user does not wish to log out, thus they press the "Cancel" button, and they are redirected to their home page.
 * Rainy Day Case #1:**