Bumping gaia.json for 8 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/d3c3e8320c2c
Author: Ryan VanderMeulen <ryanvm@gmail.com>
Desc: Revert "Merge pull request #15692 from 6a68/settings-app-WIP-rebased"

This reverts commit 8328ac15d589c213373c0849cfcff9a34e715a25, reversing
changes made to c149d0fe8cb3ca08d28ae1d94d9ee9147be52e68.

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https://hg.mozilla.org/integration/gaia-central/rev/41bc5102be06
Author: vingtetun <21@vingtetun.org>
Desc: Merge pull request #17248 from vingtetun/bug983991.keep.layers

Bug983991.keep.layers

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https://hg.mozilla.org/integration/gaia-central/rev/900b0e6f41d1
Author: Vivien Nicolas <21@vingtetun.org>
Desc: Bug 983991 - Keep panels partly on screen after transition to preserve their layers. r=crdlc

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https://hg.mozilla.org/integration/gaia-central/rev/05e60ae313e0
Author: Vivien Nicolas <21@vingtetun.org>
Desc: Bug 983991 - Do not reflows on panels changes. r=crdlc

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https://hg.mozilla.org/integration/gaia-central/rev/69278782b246
Author: Vivien Nicolas <21@vingtetun.org>
Desc: Bug 983991 - Move the will-change rule from ol to .page. r=crdlc

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https://hg.mozilla.org/integration/gaia-central/rev/5ac74b4b4675
Author: Vivien Nicolas <21@vingtetun.org>
Desc: Bug 983991 - Ensure the pagination bar layer is always here. r=crdlc

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https://hg.mozilla.org/integration/gaia-central/rev/2e86e55efebe
Author: Francisco Jordano <arcturus@ardeenelinfierno.com>
Desc: Merge pull request #17101 from arcturus/bug-982080

Bug 982080 - [Contacts] JSHint fixes for js/utilities

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https://hg.mozilla.org/integration/gaia-central/rev/c3e26fb96277
Author: Francisco Jordano <arcturus@ardeenelinfierno.com>
Desc: Bug 982080 - [Contacts] JSHint fixes for js/utilities
Bumping manifests a=b2g-bump