Added ability to show elasped time or remaining time on LCD. Push up or down arrow when playing to toggle.
Fixed lcd bug where when in Playlist Menu user needed to wait for timeout. Now Left/Right will bring back to status display.
Fixed status of playlist items. Fixed bug that crashed script if no playlist exists and select was pushed in playlist menu
Combined the background menus into one menu.
Added RTC DS1307 support
Added text prompting for reboot if change made to rtc clock
Merge branch 'v0.2.0' into stage

Merging all changes back from live branch to stage so we can
start staging v0.3.0 changes in stage branch.