User context always (incorrectly) assumes that $current_user is only updating their own profile

[frankiejarrett]

Within the Users context, when a profile Stream assumes that $current_user is always editing their own profile. However, it could be that an Administrator user is updating someone else's profile on their behalf.

Therefore, the post_author for these stream posts should always be $current_user, but the summary data should still reference the user whose profile was updated.

This same principle can apply to other actions as well, such as registering other users.

[shadyvb]

@fjarrett Fixed in 5b809ce