STORY
As a repository owner, I don't want to confuse unauthenticated users with spurious flash messages, so that information about the underlying application isn't accidentally revealed to unauthenticated users.
ACCEPTANCE
[x] Flash messages are suppressed on the /contribute page for unauthenticated users
[x] Flash messages are suppressed on the /users/sign_in page for unauthenticated users
STORY As a repository owner, I don't want to confuse unauthenticated users with spurious flash messages, so that information about the underlying application isn't accidentally revealed to unauthenticated users.
ACCEPTANCE
/contribute
page for unauthenticated users/users/sign_in
page for unauthenticated users