Orum and Waric follow-up: Add Guarding Spirit

The Guarding Spirit prevents people who didn't do the first part of the quest from entering.
Players that helped to free Waric can persuade the spirit to let them in.
Once the player entered, the spirit warps into the cave on touch.
Orum and Waric follow-up: Add NPCs Orum and Waric.

Initial talk in Waric's script.
Logic for the first flower in Orum's script.
Orum and Waric follow-up: dialogue and logic in Orum for second magical flower.
Orum and Waric follow-up: dialogue and logic for third flower.

That involves a minigame to prepare the third flower.
Orum and Waric follow-up: dialogue and logic for fourth flower.
Orum and Waric follow-up: Dialogue and logic for fifth flower
Merge remote-tracking branch 'origin/master' into waric
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
Add evil woodland monsters:

Demonic Mouboo
Vicious Squirrel
Wicked Mushroom