Bumping gaia.json for 3 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/1d9d7f9c5ab9
Author: BavarianTomcat <tomcat@mozilla.com>
Desc: Revert "Bug 1053703 - Merge pre-app.js, app.js and post-app.js to one javascript file r=gduan" for bustage

This reverts commit 0f4defc66276b957344de203651ef29cf6a85ec0.

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https://hg.mozilla.org/integration/gaia-central/rev/509cc71d8137
Author: Cristian Rodriguez <crdlc@tid.es>
Desc: Merge pull request #23262 from mancas/bug1054827

Bug 1054827 - [FTU][FTE] "Enter PIN code" for SIM2 page flashing and key...

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https://hg.mozilla.org/integration/gaia-central/rev/f7d004b62420
Author: Carsten Book <tomcat@mozilla.com>
Desc: Bug 1054827 - [FTU][FTE] "Enter PIN code" for SIM2 page flashing and keypad not shown after flashing stops
Bumping manifests a=b2g-bump