Bumping gaia.json for 7 gaia-central revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/d84bb2c56059
Author: Yuren Ju <yurenju@gmail.com>
Desc: Merge pull request #12416 from yurenju/xpcshell3

Bug 904105- part 2: create firefox extension r=@timdream

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https://hg.mozilla.org/integration/gaia-central/rev/06beaade26b0
Author: Yuren Ju <yurenju@gmail.com>
Desc: Bug 904105- part 2: create firefox extension

create a firefox extension for building gaia. you can follow instructions to use this extension:

1. cd <GAIA_DIR>/tools/extensions/gaia-build@gaiamobile.org
2. FIREFOX="<FIREFOX_BIN_PATH>" make run
3. go to tools -> addons and enable gaia-build extension (default is disable)
4. go to url: about:gaia
5. select your gaia dir and click launch gaia

another firefox window will be opened and running gaia.

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https://hg.mozilla.org/integration/gaia-central/rev/ef27b43db7f2
Author: Rex KM Lee <rexboy@mozilla.com>
Desc: Merge pull request #11981 from rexboy7/fix-bug903278

Bug 903278 - [Dialer] Hide navbar when user enters contact detail. r=rik

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https://hg.mozilla.org/integration/gaia-central/rev/84566424f570
Author: Rex Lee <rexboy@mozilla.com>
Desc: Bug 903728 - [Dialer] Hide navbar when user enters contact detail (P-4)

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https://hg.mozilla.org/integration/gaia-central/rev/2ecaa9c9f666
Author: Rex Lee <rexboy@mozilla.com>
Desc: Bug 903728 - [Dialer] Hide navbar when user enters contact detail (P-3)

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https://hg.mozilla.org/integration/gaia-central/rev/2a64a1a755d2
Author: Rex Lee <rexboy@mozilla.com>
Desc: Bug 903278 - [Dialer] Hide navbar when user enters contact detail (P-2)

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https://hg.mozilla.org/integration/gaia-central/rev/15639f3465b5
Author: Rex Lee <rexboy@mozilla.com>
Desc: Bug 903278 - [Dialer] Hide navbar when user enters contact detail