Signin page shows flash correctly

Still got stubbed out user model, so signin not implemented yet.

Also, the flash doesn't clear if you go to another page. So going to fix that next before going onto user model

Signed-off-by: Ippoippo <ippoippo-software@ippoippo-eco.com>
Fixed error message flash issue

Added new scenario, tested, fixed, tested.

I do need to refactor some of the step_definitions now. Need to review the cucumber documentation for that.

Next, user model.

Signed-off-by: Ippoippo <ippoippo-software@ippoippo-eco.com>