Add support for showing targeting arrows when hovering over items on the stack

git-svn-id: http://svn.slightlymagic.net/forge/trunk@28049 269b9781-a132-4a9b-9d4e-f004f1b56b58
Avoid showing unnecessary tooltip when hovering over items on stack

git-svn-id: http://svn.slightlymagic.net/forge/trunk@28050 269b9781-a132-4a9b-9d4e-f004f1b56b58
Support showing targeting arrows for players

git-svn-id: http://svn.slightlymagic.net/forge/trunk@28051 269b9781-a132-4a9b-9d4e-f004f1b56b58
Update CHANGES.txt

git-svn-id: http://svn.slightlymagic.net/forge/trunk@28052 269b9781-a132-4a9b-9d4e-f004f1b56b58