[$50] Refactor access levels on the resources

[ThomasKranitsas]

Right now, we have a fullAccess flag for each ResourceRole which means a resource can either have or not full access (read/write) on a challenge.

We should split this into two flags (fullReadAccess and fullWriteAccess) so we can chose which roles have what sort of access.

For example, a manager/copilot can have both and an observer can have only fullReadAccess etc

cc @rootelement

[ThomasKranitsas]

PR topcoder-platform/resources-api#41

[rootelement]

Contest https://www.topcoder.com/challenges/30145989 has been created for this ticket.

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[rootelement]

Contest https://www.topcoder.com/challenges/30145989 has been updated - it has been assigned to thomaskranitsas.

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[rootelement]

Payment failed: [500]: Failed to get challenge details by Id

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