Flowauth should display year (and also seconds and timezone?) in the token expiry date

[maxalbert]

Describe the bug
Flowauth does not display the year in the token expiry date, making it impossible to know when exactly a token will expire. Similarly, it would be helpful if it displayed token expiry up to second resolution, and also displayed the timezone (or made it clear that it refers to UTC if that's the case?)

Product
Flowauth

Version
Latest master (e03de7b)

To Reproduce

1. Follow the steps in Flowauth demo data doesn't allow token creation due to expired date (redirects to login screen instead) #259 until step 6.
2. Notice that the token expiry date reads "January 1st 12:00 am".

Expected behavior

The token expiry date should read "1st January 2019, 12:00 am" or similar.

In fact, I'd prefer if the information was as comprehensive as possible so I'd like to see second-resolution and timezone information as well.

Screenshots

[greenape]

I think that it shows the year for years other than the current year. Picker is this: https://material-ui-pickers.firebaseapp.com/api/datetimepicker which should allow us to tweak it to show both year and seconds.