Fix commit message for the previous commit

Implement consistent Squeezer item actions

- Implement actions as per:
  https://docs.google.com/spreadsheet/ccc?key=0AoZbzjFHlorsdE1MY2FFeE1jYjRkTEw1aV9qUURuV3c&usp=sharing
- Configurable actions are moved from activity to view logic, to make it work
  from all lists, i.e. album list and search result for albums, and song list,
  search result and playlist songs for songs.
- Call default and context menu actions through the adapter, to enable reuse
  for search results.
- Add PlayableItemAction.Type.NONE and use this as the default for songs.
- Add an ActionBar/options menu entry to play/queue all songs of activities
  showing songs