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

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https://hg.mozilla.org/integration/gaia-central/rev/b1285c7e5745
Author: Carsten Book <tomcat@mozilla.com>
Desc: Merge pull request #23273 from tauzen/Bug1055446_debug_cleanup

Bug 1055446 - NFC: log visibly errors in nfc relateded files, r=gweng

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https://hg.mozilla.org/integration/gaia-central/rev/af9f1e0dc7dc
Author: Krzysztof Mioduszewski <kmioduszewski@gmail.com>
Desc: Bug 1055446 - NFC: log visibly errors in nfc related files, r=gweng

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https://hg.mozilla.org/integration/gaia-central/rev/7fb735fb644e
Author: Carsten Book <tomcat@mozilla.com>
Desc: Merge pull request #23405 from oklang/bug_1055104_theme_switching_panel

Bug 1055104 - Theme switching panel. r=ejchen

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https://hg.mozilla.org/integration/gaia-central/rev/63f473233eba
Author: Olle Klang <olle.klang@sonymobile.com>
Desc: Bug 1055104 - Theme switching panel

This patch adds a Theme switching panel in the Settings app.
Bumping manifests a=b2g-bump