Converted AudioPlayerActivity to AudioPlayerFragment
Updated AudioSelectActivity to AudioSelectFragment

Updated some methods onCreateOptionsMenu(Menu) (Activity class) to
onCreateOptionsMenu(Menu, MenuInflater) (Fragment class) , too.
Updated ShareListActivity to ShareListFragment
Some fix
Fixed the button Artists workflow in larges screen

Before, when we navigate in the button Artists workflow,
and the Back button was clicked, the app is closed.
Now, when the button is clicked, the fragment showed back to
previous one.
Updated PlayListEditorActivity to PlayListEditorFragment
Updated MusicSelectActivity to usicSelectFragment
Using AudioPlayerFragment instead of AudioPlayerActivity in PlayListEditorFragment
Merge pull request #16 from adorilson/fragmentation

Using fragments instead of activities
Merge pull request #5 from rbonifacio/master

Merge with blessed