New Thanatology Triggers

Introduced new incoming and outgoing Thanatology attacks to the system.
adjusted greater heal alias script for shadoweavers

a lot of priest terts use their own version of greater heals. the
shadoweaver version should have a skill check.
adjusted latency delay for priest attacks

ill omen and torturous whip latency check has been reduced to 2
grip check in basher for rogues

improved the grip check for rogue bashing. also included a check for
those who don't have grip skills or does not have gripping toggled.
Swapped the mainhand and offhand rewielding

mainhand weapons will now be wielded in the right hand, and offhand
weapons will be in the left hand. Made the fishing unwielding function
to respect this as well.