Raise the minimum allowable job level in Abyssea from 30 to 70+

[Tsukino_Kaji]

Before Abyssea =/= Before Treasures of Aht Urhgan.

Just because people weren't able to snag an East Ronfaure [S] camp and occasionally defaulted to shit-tier camps in Garlaige Citadel doesn't mean they were prime leveling spots.

The 13 was post TAU, pre-TAU is somewhere closer to 20.