get titles into the menu

Change the menu factory, hoping to get into the menuitems
move playlist to menu

playlist is now displayed in the indicator menu
notifier pops up with the current title and station
further tries to get menu display running

complete manual menu creation
double-buffering menu labels
still segfaults on occasion
next try with strdup memory wasting

does not work either. Looks like another problem
show titles in menu rather than in notifier

workaround, use one multilined menu entry rather than multiple
entries.
Merge branch 'menu'

some code cleanups
indicator menu holds recent four tracks
notifier just shows current track