Fixed Bug 7542

replaced pc_isuseitem 90overweight error message by its official version, added invent-full check for when trying to open packages/boxes, and modified mail getAttachment to fail when over 90% weight.
Special Thanks to kyeme.
http://hercules.ws/board/tracker/issue-7542-bug-when-weight-90/

Signed-off-by: shennetsind <ind@henn.et>
Merge branch 'master' of https://github.com/HerculesWS/Hercules
Fixed Bug 7883

Special Thanks to Megasantos, Beret.
Follows up 098dbcf672e04657553b9f1629550e6bc8771af3
http://hercules.ws/board/tracker/issue-7883-reloaditemdb/

Signed-off-by: shennetsind <ind@henn.et>