Time enabaled , seconds support

[mafar]

Please Support seconds slider. However I think 3 simple drops downs with hour/min/sec will even save more space.

time: {
enabled: true,
showSeconds:true,
showMinutes:true,
showHours:true,
 }

On time sensitive database queries, User has to select time in seconds and my picker is in readonly state so user can't dot anything since he cant change input

[holtkamp]

As always, a PR + working demo would be welcome!