Trying to verify while a shift is "upcoming" should display a flash message

[nherson]

Trying to verify while a shift is "upcoming" should display a flash message

[brianashpugh]

I think we want to stay away from enforcing time limits too strictly. it's nice to be able to do workshifts a little early if necessary, and it doesn't seem like this would lead to any abuse.

probably worth discussing.

[mitar]

I agree.