Voice Card: fix error
VoiceCard: fix error bug
Voice Card : 1. To modify get card id from server
             2. To fix bug names are the same(sign and img)
             3. To update data of local db
Voice Card: add thread for copy db image from asset folder to internal storage
Voice Card : 1. To clear new state after viewed the item
             2. To show mails from ownerId
Voice Card : To fix bug for post news failed
[CardViewer] send back function