fix time picker timezone issue

SimpleDateFormat.setTimeZone() wasn't called, which caused bad time
string in time zone other than GMT+4
fix proxy on Gingerbread

On Gingerbread apache http does not use default ProxySelector. Replaced
it with URL.openConnection().
On Gingerbread default ProxySelector does not work. Replaced with custom
ProxySelector
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
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amend-to-gingerbread
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