Bumping gaia.json for 18 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/6d2a2c5c58fc
Author: Yuren Ju <yurenju@gmail.com>
Desc: Revert "Bug 897352 - [gaia build system] Transition to a build_stage for assembling apps"

This reverts commit 22a4d4f8065af46d23097bbaf898831d5c031ce3.

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https://hg.mozilla.org/integration/gaia-central/rev/c898bac8e399
Author: Timothy Guan-tin Chien <timdream@gmail.com>
Desc: Merge pull request #17311 from timdream/keyboard2-jshint

Bug 984718 - [keyboard refactor] Fix jshint errors, r=rudyl

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https://hg.mozilla.org/integration/gaia-central/rev/81b608b07b34
Author: Timothy Guan-tin Chien <timdream@gmail.com>
Desc: Bug 984718 - Add test/unit/.jshintrc

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https://hg.mozilla.org/integration/gaia-central/rev/50c5e595decc
Author: Timothy Guan-tin Chien <timdream@gmail.com>
Desc: Bug 984718 - Fix jshint errors for shiftkey_test.js

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https://hg.mozilla.org/integration/gaia-central/rev/f47914733adf
Author: Timothy Guan-tin Chien <timdream@gmail.com>
Desc: Bug 984718 - Fix jshint errors for page_test.js

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https://hg.mozilla.org/integration/gaia-central/rev/551cd52291a0
Author: Timothy Guan-tin Chien <timdream@gmail.com>
Desc: Bug 984718 - Fix jshint errors for doublespace_test.js

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https://hg.mozilla.org/integration/gaia-central/rev/cd3add8bf7a6
Author: Timothy Guan-tin Chien <timdream@gmail.com>
Desc: Bug 984718 - Fix jshint errors for touch_handler.js

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https://hg.mozilla.org/integration/gaia-central/rev/9e3bc170b4dd
Author: Timothy Guan-tin Chien <timdream@gmail.com>
Desc: Bug 984718 - Fix jshint errors for suggestions.js

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https://hg.mozilla.org/integration/gaia-central/rev/8e66c29fe26d
Author: Timothy Guan-tin Chien <timdream@gmail.com>
Desc: Bug 984718 - Fix jshint errors for shiftkey.js

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https://hg.mozilla.org/integration/gaia-central/rev/9452db9378f7
Author: Timothy Guan-tin Chien <timdream@gmail.com>
Desc: Bug 984718 - Fix jshint errors for settings.js

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https://hg.mozilla.org/integration/gaia-central/rev/d02f5491ce03
Author: Timothy Guan-tin Chien <timdream@gmail.com>
Desc: Bug 984718 - Fix jshint errors for pageview.js

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https://hg.mozilla.org/integration/gaia-central/rev/487771ef78f9
Author: Timothy Guan-tin Chien <timdream@gmail.com>
Desc: Bug 984718 - Fix jshint errors for page.js

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https://hg.mozilla.org/integration/gaia-central/rev/5f4e55f0b705
Author: Timothy Guan-tin Chien <timdream@gmail.com>
Desc: Bug 984718 - Fix jshint errors for layout.js

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https://hg.mozilla.org/integration/gaia-central/rev/551fccef9224
Author: Timothy Guan-tin Chien <timdream@gmail.com>
Desc: Bug 984718 - Fix jshint errors for key.js

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https://hg.mozilla.org/integration/gaia-central/rev/9d57fcda4c16
Author: Timothy Guan-tin Chien <timdream@gmail.com>
Desc: Bug 984718 - Fix jshint errors for input_field.js

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https://hg.mozilla.org/integration/gaia-central/rev/53c23e9f2880
Author: Timothy Guan-tin Chien <timdream@gmail.com>
Desc: Bug 984718 - Fix jshint errors for doublespace.js

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https://hg.mozilla.org/integration/gaia-central/rev/56a516351ac1
Author: Timothy Guan-tin Chien <timdream@gmail.com>
Desc: Bug 984718 - Fix jshint errors for boot.js

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https://hg.mozilla.org/integration/gaia-central/rev/7b1506bd4160
Author: Timothy Guan-tin Chien <timdream@gmail.com>
Desc: Bug 984718 - Fix jshint errors for autocorrect.js
Bumping manifests a=b2g-bump