added “tap the done button” image
Merge branch 'master' of https://github.com/TBITracker/taskplanner

# By Kaye, Lindsay M
# Via Kaye, Lindsay M
* 'master' of https://github.com/TBITracker/taskplanner:
  Added self.isplaying check back in to audio playing.
  Changed timer to use system sound rather than avaudioplayer sound.
  Centered execute task image/text/mic icon vertically within view.