Per group world time

[wildex999]

Certain mods(Thaumic Tinkerer) depends on an linear World time, doing certain checks or calculations on specific World times(Tick count).
As it stand now, some Tiles/Entities might not tick on certain world times.

For 0.2.0 implement a Group-specific world time, which is set when that group is ticking.
This world timer will essentially be increasing as the group is ticking it's last Entity.