[animation] slight inconsistencies for loop modes

[Hermann-SW]

Slight inconsistency:
"min" is in animation for all three loop options, while "max" for "restart" only.

"reverse" as in clock.js example: max-1, max-2, ... , min+1, min, max-1, ...
"restart" as previously used: max, max-1, ..., min+1, min, min+1, ..., max-1, max, max-1, ...
"foobar" (or any other string): max-1, max-2, ..., min+1, min once and then stops.