Add short effects for B/W 2 items.

pokedex/data/csv/item_prose.csv

@@ -1227,3 +1227,13 @@ This item can only be obtained or used via the Wonder Launcher."
 :   When the holder uses a damaging []{type:dragon}-type move, the move has 1.5× power and this item is consumed."
 669,9,"Held: When the holder uses a damaging []{type:normal}-type move, the move has 1.5× power and this item is consumed.","Held
 :   When the holder uses a damaging []{type:normal}-type move, the move has 1.5× power and this item is consumed."
+670,9,Holds medals recieved in the medal rally.,
+671,9,"Fuses Kyurem with Reshiram or Zekrom, or splits them apart again.",
+673,9,Grants access to the Nature Preserve.,
+674,9,Doubles the chance of two Pokémon producing an egg at the daycare every 255 steps.,
+675,9,Raises the chance of finding a shiny Pokémon.,
+676,9,Required to progress in the Plasma Frigate.,
+677,9,Appears in the Café Warehouse on Sunday; return to the customer with a Patrat on Thursday.,
+678,9,Wakes up the Crustle blocking the way in Seaside Cave.,
+679,9,Returned to Curtis or Yancy as part of a sidequest.,
+681,9,"Switches Tornadus, Thundurus, and Landorus between Incarnate and Therian Forme.",