<DE2> Implemented opening any playlists

When you click a playlist, the song panel (panel on the right) will show all the
songs that belong to that list.
Merge branch 'master' of https://github.com/Ilikecattle/EECE381Module2

Conflicts:
	software/StereoSystem/Button.c

Merging with previous commits
<DE2 & Android> Fix for selecting list

From Danny: right now android doesnt send command to DE2 to open
songs in a list. it only calls selectList, not syncSelectList.
<DE2> Danny's changes
small conflict on message prop