Arista

I've added some more enhancements to the timer:

1) The slider timer's duration can now be specified in one-second increments. Useful for those who want to time special events that don't necessarily happen in ticks, like CH rotations. Thanks to Myysst for making this suggestion.

2) The maximum duration of the slider timer has been increased to 4 hours (actually, 3:59:59). This will allow extra long buffs/abilities to be timed. Thanks to Tils for making this suggestion.