Windows hacks.
Register the "docs" subdir after declaring ENABLE_TOOLS

The manpages' CMakeLists make use of the ENABLE_TOOLS option, therefore
it has to be defined before the docs/man subdirectory is registered in
the main CMakeLists.txt file.

Fixes #59
Update Info.plist
added config option for text position in karaoke-mode
made the config option shorter
covers are now drawn in playlist screen

Conflicts:
	game/screen_playlist.cc
	game/screen_playlist.hh

merged commit that covers are drawn in screen_playlist
fixed songs without covers
Merge branch 'master' into webserver

Conflicts:
	game/screen_playlist.cc
	game/screen_playlist.hh

periodic merge with master