Some fixes to item_db

* Comment out the spear, like in client data
* Adjust some prices, so they are not lower than the sell price
* The label for BlackWizardHat does not say that it's red anymore
* Changing some types from useable to gerneric,
  since there is no use script
Merge pull request #17 from cody/master

Some fixes to item_db
NPC changes
Run make maps for map changes and npc position changes.

Update submodule pointer.
Add Silksheet(891) to item_db
Modify NPC Lora Tay to accept silk sheets (010-2)
Add NPC Hetchel(376) to 021-1
replaced wrong "cocoon" by "sheet" in sheet dialog
Allowed to buy multiple sheets, Dialogs improvement.
minor error corrections (see comments)
fixed dbl quote issues
Hetchel dialog: typo fix
Update submodule pointer for commits related to the addition of Hetchel.
Fixed the NPC warps to have the same range as normal warps instead of the 3 by 3 square.
Fixed warppoints in and out of Cindy's cave.
Update submodule pointer for mapfix on 013-1.
Edit: Evil Obelisk 018-3 and Function Evil Obelisk

* Changed monster to areamonster, monsters will now spawn in an area defined
* adapted logic
* decreased costs
run 'make maps' for client-data changes.

update submodule pointer.
Make make news dep on news.d's timestamp, not just splat
update submodule pointer for 015-1