Edited changelog.lua

Added some new items to list, edited items on list and deleted some
items.
Higher resolution menutext.png

Replaced old menutext.png with a higher res version.
Thumbs.db deleted

Deleted Thumbs.db because its useless crap.
Rewrite of menu.lua

Changed the way the menu works, slight redesign, cleaned up code a
little, deleted unneeded code, added ‘W’ and ’S’ as keys for the arrow.
Compare the old and new for any missed details.