Bug 911641 (part 1) - Remove about:compartments, and show the compartment and ghost window lists into about:memory.  r=johns.

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extra : rebase_source : c1ef005e272048e2eb84b20bafff15bcb5aae511
Bug 911641 (part 2) - Prefix some reporters with "redundant/", and make about:memory ignore them.  r=johns.

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extra : rebase_source : 9ed48217ecb8af66256ddbdb70ad9f6b5d049582