Merge pull request #71 from Rakeshadlagatta/master

added delete to userchat
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Merge remote-tracking branch 'upstream/master'
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Merge remote-tracking branch 'upstream/master'
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dynamic dowload and upload link
Merge pull request #72 from raghuvissu/master

some bug fixes
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Merge remote-tracking branch 'upstream/master'
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Merge pull request #73 from raghuvissu/master

address manage hierarchy for add,edit,delete
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