login with no email

[anjalakaturi]

closes #408

[danielfang97]

This is kind of working. The test is submitting an email of "bademail", which doesn't fit into the regex of a valid email. Therefore, I currently have it written as a 400 error returning "Please enter a valid e-mail address". I feel this is a better response than the one in SBH1 which is a 401 stating "Your e-mail address was not recognized."
Chris, what are your thoughts?

[cjmyers]

Agreed. The message could be better.

[cjmyers]

While I've approved, please fix the message and conflicts before merging.

[cjmyers]

@anjalakaturi Please update the test to use a valid email address which is not a valid user. In this case, the message should match SB1.

[danielfang97]

I just tested this on my local and I got the matching content. Not sure what the issue is, but will look into it more.