Gave solar panel a side texture. Removed alpha channel from top.

mesecons_solarpanel/init.lua

@@ -1,7 +1,10 @@
 -- Solar Panel
 minetest.register_node("mesecons_solarpanel:solar_panel", {
 	drawtype = "nodebox",
-	tile_images = {"jeija_solar_panel.png"},
+	tile_images = {
+		"jeija_solar_panel.png",
+		"jeija_solar_panel_sides.png"
+		},
 	inventory_image = "jeija_solar_panel.png",
 	wield_image = "jeija_solar_panel.png",
 	paramtype = "light",