Add tooltip to "Remind to Vote" Button if email is unavailable

[hochiw]

• Refactored tooltip to maintain a self-contained popper state
• Added email validator for security contact checking
• Removed the logic to hide "Remind to vote" button when no email is provided and instead disable the button

Screenshot

Desktop	Mobile

refs #74

[elise-ng]

we might need to give hint on how to add email for operators (add security contact email in validator info)

currently as a operator i dont see how to add contact info even if i want to

[hochiw]

we might need to give hint on how to add email for operators (add security contact email in validator info)

currently as a operator i dont see how to add contact info even if i want to

if they know how to create validator I think they probably know how to add that :sosad: but that would be a nice add-on?

@mitchellchou opinion?

[mitchellchou]

I think ok not to have the hint, our target users should be normal users, the hint may be too complex to put on our site (validators should know where to ask the questions)