Fixes tweaks new commands
(#52)
* new command, tooltips and help
New Command
`/lns corpsereset` resets the current zones list of already looted corpeses
added tooltip for the new search options to the item lookup tab
updated help window to reflect new command.
* corpse reset
oops that command was `/lns corpsereset`
* reporting tweaks
* fix: checkcorpseonce lockout bug
fixed a bug where having CheckCorpseOnce disabled would prevent you from looting.
* nil checks for super rare imgui crashes when removing items from a table