[videoosd] fix button id refs on up/down
[musicosd] fix button controls
[visuallist] adjust controls to fit new design
[viewlist] adjust watched/unwatched indicator positions (fixes #9)
[NotificationNowPlaying] refactor second title in variable
[progressbar] change position to bottom for notification center progress
bar
[slider] adjust size of slider control
[osd] adds a new video information osd