[TownyCaptureSites] Suggestion: multiple defend tp points

[tomhmagic]

Please explain your feature request to the best of your abilities:

We are seeing an issue where attackers will camp the spawn point of a site ready for when a defenter tps.

What would be nice is to supply a few extra locations for it to randomly pick when using /t defend

Suggested commands
/ta capturesite usetplist - toggle using the list of TP locations on or off per site
/ta capturesite tplist - lists the current locations set for this site
/ta capturesite settp - sets the current position to a tp point and adds to the list
/ta capturesite removetp [array index] - removes a tp point from the list

and added bonus would be
/ta capturesite usespawn - which would toggle using the homeblock spawn in the /t defend tp, this is so if you had a homeblock only site, but didn't want the defenders tping to the homeblock. This command will error if usetplist was false.