Add spellpower bonus to god's gifts.

I think this was probably intended when they were made, due to the naming system used and comments in the files. Made them give 10 spellpower to the respective school: Faren for brass medallion, Shal'ille for diamond pendant, Qor for monocle, Riija for feathered choker and Kraanan for steel torc. Jala already has the Jala necklace which gives spellpower in that slot.

Also, I made the flavor message display each time the item is equipped. The should feel 'special' when used, more so than a regular item.