add static generator for item rewards txts

mhapi/db.py

@@ -68,7 +68,7 @@ class MHDB(object):
 
     def get_item_names(self):
         v = self._get_memoized("item_names", """
-            SELECT name FROM items
+            SELECT _id, name FROM items
             WHERE type IN ('Bone', 'Flesh', 'Sac/Fluid')
         """)
         return v

mhapi/rewards.py

@@ -168,6 +168,11 @@ class HuntReward(object):
         self.percentage = reward["percentage"]
         self.item_id = reward["item_id"]
 
+        if not self.percentage:
+            # TODO: this is an error in the db, print warning in higher
+            # level code
+            self.percentage = 0
+
         self.cap = False
         self.kill = False
         self.shiny = False