Added official Cyberpangolin skin

- Added officiel Cyberpangolin skin
 - Modified old Cyberpangolin to rename it "Matrix"
 - Added Cyberpangolin and Obani as authors
 - Added a log indicating which skin is registered when and with which name

mods/u_skins/u_skins/meta/mff_character_13.txt

@@ -0,0 +1,3 @@
+Cyberpangolin official
+Cyberpangolin
+??

mods/u_skins/u_skins/meta/mff_character_4.txt

@@ -1,3 +1,3 @@
-Cyberpangolin
+Matrix
-
+Obani
 GPL3

mods/u_skins/u_skins/meta/mff_character_9.txt

@@ -1,3 +1,3 @@
 Obani
-
+Obani
 GPL3

mods/u_skins/u_skins/skinlist.lua

@@ -18,6 +18,13 @@ while fetched_skip < 40 do
 		u_skins.meta[name].license = data[3]
 		u_skins.meta[name].description = "" --what's that??
 
+		local logstr = "[u_skins][#" .. internal_id .. " Skin " .. name
+		if data[2] ~= "" then
+			logstr = logstr .. " from " .. data[2]
+		end
+		logstr = logstr .. " under license " .. data[3] .. " registered as " .. data[1]
+		minetest.log("action", logstr)
+		
 		fetched_skip = 0
 		internal_id = internal_id + 1
 	end
@@ -42,6 +49,13 @@ while fetched_skip < 40 do
 		u_skins.meta[name].license = data[3] or ""
 		u_skins.meta[name].description = ""
 			
+		logstr = "[u_skins][#" .. internal_id .. " Skin " .. name
+		if data[2] ~= "" then
+			logstr = logstr .. " from " .. data[2]
+		end
+		logstr = logstr .. " under license " .. data[3] .. " registered as " .. data[1]
+		minetest.log("action", logstr)
+
 		fetched_skip = 0
 		internal_id = internal_id + 1
 	end