[$75] Add ability to archive a group

[jmgasper]

@atelomycterus - One thing we'd like to plan for in the future is the ability to mark a group / challenge group as archived. An archived group / challenge would:

• Not be shown in the UI at all (under /groups / /groups/mine)
• Still be accessible by direct links

The goal here is to ensure that, at the end of a challenge, we can remove the challenge group from the user's navigation, but the forum is still accessible in the future, if the member wants to go back to it. It just won't show up in their navigation in the site, to avoid clutter for someone (like me) who has run thousands of challenges.

We'd need a way to flag this through the API.

[jmgasper]

Contest https://www.topcoder.com/challenges/30149671 has been created for this ticket.

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[jmgasper]

Contest https://www.topcoder.com/challenges/30149671 has been updated - it has been assigned to obog.

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[atelomycterus]

@jmgasper Please apply PRs from - #133. Thanks.

Added Archive permissions in Groups section:

Rest API: '/groups/{id}/archive'

[jmgasper]

Payment failed: [500]: Failed to get billing detail for the project.

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[jmgasper]

Payment task has been updated: https://software.topcoder.com/review/actions/ViewProjectDetails?pid=30149671

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[sdgun]

@jmgasper Should we test this behavior? I don't see Archive option on existing challenge groups or groups when I log in as admin user or TonyJ

[jmgasper]

@sdgun - For now, this is API only. You can assume its working as designed.