Bumping gaia.json for 2 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/07abeb4c00ca
Author: Timothy Guan-tin Chien <timdream@gmail.com>
Desc: Merge pull request #17235 from timdream/keyboard2-jshint

Bug 977449 - [keyboard refactor] Setup jshint for test_apps/demo-keyboard, r=yurenju

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https://hg.mozilla.org/integration/gaia-central/rev/0dda5f60c4e0
Author: Timothy Guan-tin Chien <timdream@gmail.com>
Desc: Bug 977449 - [keyboard refactor] Setup jshint for test_apps/demo-keyboard
Bumping manifests a=b2g-bump