fix proxy on Gingerbread

  - On Gingerbread apache http does not use default ProxySelector.
  Replaced it with URL.openConnection().
  - On Gingerbread system property "http.proxyHost" not set by default.
  Fixed.
TrackCalendar
no android.app.Service for PlayerService
remove dead code
Extract Track and Channel out of PlayerService
Extract current track time calculation out of PlayerService
ic_stop -> ic_pause
painful app package refactor
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