Bumping gaia.json for 4 gaia-central revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/3d0d3b3e1556
Author: Greg Weng <snowmantw@gmail.com>
Desc: Merge pull request #14528 from snowmantw/issue948299

Bug 948299 - [BuildScript] Use PROFILE_DIR instead of PROFILE_FOLDER in the extension handling module

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https://hg.mozilla.org/integration/gaia-central/rev/5d4be4ab7ce5
Author: Greg Weng <snowmantw@gmail.com>
Desc: Bug 948299 - [BuildScript] Use PROFILE_DIR instead of PROFILE_FOLDER in the extension handling module

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https://hg.mozilla.org/integration/gaia-central/rev/5280aba84106
Author: Askeing Yen (fyen) <askeing@gmail.com>
Desc: Merge pull request #14580 from zacc/bug_948822

Bug 948822 - Fix xfail message for test_cards_view_with_two_apps.py

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https://hg.mozilla.org/integration/gaia-central/rev/d803c6844afb
Author: Zac Campbell <zcampbell@mozilla.com>
Desc: Bug 948822 - Fix xfail message for test_cards_view_with_two_apps.py