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

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https://hg.mozilla.org/integration/gaia-central/rev/ca3e0c37006f
Author: Francisco Borja Salguero Castellano <borjasalguero@users.noreply.github.com>
Desc: Merge pull request #12312 from borjasalguero/followup_sms

Bug 918302 - [Followup 900443][SMS] Add a robust check when retrieving a...

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https://hg.mozilla.org/integration/gaia-central/rev/99c1b41313cd
Author: borjasalguero <fbsc@tid.es>
Desc: Bug 918302 - [Followup 900443][SMS] Add a robust check when retrieving a contact from activity. r=julienw

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https://hg.mozilla.org/integration/gaia-central/rev/d6876efaab51
Author: Fernando Campo <fernando.campo@o2.com>
Desc: Merge pull request #12270 from fcampo/BT-exportVcard-887534

Bug 887534 - [US] Send contact as a VCARD via bluetooth (r=borjasalguero)

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https://hg.mozilla.org/integration/gaia-central/rev/a258d8fafed8
Author: Fernando Campo <fernando.campo@o2.com>
Desc: Bug 887534 - [US] Send contact as a VCARD via bluetooth
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Create bt.js and use it for bluetooth call
Add error messages, seems to work, error related to other bugs
Fixing activity parameters
Correct path for file
Getting the file from sdcard
Adding log sfor debug
More logs, seems to work now
last changes, working now, need to clean up code
Cleaning up
Refactor and final cleanup
Adding tests