Added URL mapping for Release attachments like on github.com

[al-sabr]

Description

Implement a Git Hub style URL mapping for the attachment files in Release.
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[cez81]

PR #1707 #1700

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs during the next 2 weeks. Thank you for your contributions.

[techknowlogick]

closing as linked PR has been merged.