Reverse order of visual gears linked list
Now vgears will render in the order they have been added.
Older visual gears are rendered earlier, so they are "behind" newer visual gears.
This has been primarily done to fix the render order of speech bubbles (bug #287).
07f3bf8d98a3
Hedgewars.png had a resolution more than twice as high as required; also fixed some (mostly obsolete) code that also contained a typo that would cause a warning/note in clang
