add function to display album art aside jplayer
change album art image when song changes
make albumart visible at the bottom-left corner
add a user option to toggle album art visibility
check if current track exists before setting album art
Merge branch 'display-albumart' of github.com:lzh9102/cherrymusic into lzh9102-display-albumart
fixed not using the cached album art, due to trailing slash
hide albumart on small screens, so layout doesn't break
Merge branch 'lzh9102-display-albumart' into devel
redeployed after feature merge