map names

#12
animation for curse power

#28
quest log

#14
new spell art spritesheets
Add file engine/misc.txt to add a unique game prefix.

This setting makes sure there will be no conflicts of savefiles
between this mod and any other mod (such as alpha_demo), with respect
to items, levels, xp table, and so on.

Signed-off-by: Stefan Beller <stefanbeller@googlemail.com>