Changed the icon for drone DPS.

Before, it was sharing the same icon as the drone bay capacity. Renamed icon files appropriately and removed the extra image since I don't want to reuse it for something with a different meaning.

gui/builtinStatsViews/firepowerViewFull.py

@@ -50,7 +50,7 @@ class FirepowerViewFull(StatsView):
 
         counter = 0
 
-        for damageType, image in (("weapon", "turret") , ("drone", "droneBay")):
+        for damageType, image in (("weapon", "turret") , ("drone", "droneDPS")):
             baseBox = wx.BoxSizer(wx.HORIZONTAL)
             if counter == 1:
                 sizerFirepower.AddSpacer( ( 40, 0), 1, 0, 5 )