update remove song form playlist
-add new playlist
-add new song as array
-add song picker
-add song object to nsmutable array and remove it
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Merge branch 'Vanbungkring' into finishing

Conflicts:
	melon.xcodeproj/project.xcworkspace/xcuserdata/macbookair.xcuserdatad/UserInterfaceState.xcuserstate
	melon.xcodeproj/xcuserdata/macbookair.xcuserdatad/xcdebugger/Breakpoints.xcbkptlist