Comment+on+a+Friend's+Wall

=__Comment on a Friend's Wall:__= Synopsis: A Faceplace User leaves a post on a friend's wall. Actor/User: Faceplace User. Preconditions: User is logged in and currently viewing the desired friend's profile page. Sunny Day Case: Rainy Day Case:
 * 1)  On every profile page is a field with a submit button for commenting.
 * 2) After entering text in the field, the User clicks the submit button. (See Rainy Day #1)
 * 3) The entered text is then added to the currently viewed friend's profile's wall. The User that posted it is clearly shown to anyone viewing the profile to be the one that posted the comment.
 * 4) The User remains on the friend's profile page, but the text field they previously entered text into is now empty, allowing them to post another comment if they choose. They can also see the comment that they just posted at the top of their friend's wall.
 * 5) The user who's profile was commented on is sent a notification that their wall was commented on.
 * 1) If the User tries to submit a comment without entering text, they do not create a new comment and are instead presented with an error message informing them that they have not entered a comment.