Email verification date should be hold and returned by backend as UNIX float

[annabauza]

Describe the bug
To keep consistency we should keep and return all dates as UNIX float. Currently email_verification_date has been hold and returned as date.

To Reproduce
Steps to reproduce the behavior:

1. Get any verified user data
2. See one date is in wrong format
3. View data type of User table
4. see one date is not a float type

Expected behavior
All dates stored and returned by backend should be UNIX floats

Screenshots

[srivastava9]

@isabelcosta Can I work on this issue?

[isabelcosta]

@srivastava9 since you already worked on a First Timers Only issue, can you please find another issue to solve? In this way, this issue can be solved by a newcomer :)

[srivastava9]

Okay Cool ,Haven't seen the first timers label.

[isabelcosta]

no problem at all @srivastava9 :)

[dubesar]

@isabelcosta can I work on this issue?

[isabelcosta]

@dubesar sure you can :)

[SanujBansal]

@isabelcosta can i take up this issue?

[isabelcosta]

@dubesar are you going to work on this? If yes, I can wait for your submission, if not let us know so other contributors can work on it.
cc @SanujBansal