Bumping gaia.json for 10 gaia-1_2 revision(s) a=NPOTB

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https://hg.mozilla.org/integration/gaia-1_2/rev/884950205636
Author: Francisco Borja Salguero Castellano <borjasalguero@users.noreply.github.com>
Desc: Merge pull request #12249 from reubenmorais/contacts-customization

Bug 891723 - Implement preloaded contacts customization by SIM(cherry picked from commit 3610f985413ba8c12f721a937eddbca3468cca1e)

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https://hg.mozilla.org/integration/gaia-1_2/rev/0fee49985d6d
Author: Ben Kelly <bkelly@mozilla.com>
Desc: Merge pull request #12318 from wanderview/contacts-css-opt-2

Bug 918174: Load CSS from contacts index.html  r=jmcf(cherry picked from commit 587b684a269ab1ee9a0446afed66b592a88c8057)

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https://hg.mozilla.org/integration/gaia-1_2/rev/433774d16620
Author: David Flanagan <dflanagan@mozilla.com>
Desc: Merge pull request #11914 from davidflanagan/bug905856

Bug 905856: support locked media files r=johu,dkuo,hsivonen,kaze(cherry picked from commit be94cd5f33609aa69fc86457c3ec316c1bfe20ea)

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https://hg.mozilla.org/integration/gaia-1_2/rev/8413b1631799
Author: Kyle Machulis <kyle@nonpolynomial.com>
Desc: Merge pull request #12326 from nullaus/891724-supportcontactcustomization

891724 supportcontactcustomization(cherry picked from commit bc00bf37715b7afb0a0c1d9c1b90092fd74ebc49)

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https://hg.mozilla.org/integration/gaia-1_2/rev/c1b703b8ee19
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...(cherry picked from commit 132dd57b5cffa7cc000447f8457892b92d7979fc)

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https://hg.mozilla.org/integration/gaia-1_2/rev/39c82d69c0ee
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)(cherry picked from commit 53a8671f00abf23c637578becaf17e296515c02c)

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https://hg.mozilla.org/integration/gaia-1_2/rev/af7e4c85f552
Author: Francisco Borja Salguero Castellano <borjasalguero@users.noreply.github.com>
Desc: Merge pull request #11889 from borjasalguero/madrid_getdisplayinfo

Bug 900443 - [SMS] Remove repeated request to Contacts API when retrievi...(cherry picked from commit 87e0df1bdcca5c2b57f8408b1baa84c50e999b6b)

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https://hg.mozilla.org/integration/gaia-1_2/rev/f3fb507487de
Author: Germán Toro del Valle <gtorodelvalle@gmail.com>
Desc: Merge pull request #12296 from gtorodelvalle/contacts-bug-910170-export-button-not-disabled

Bug 910170 - [CONTACTS] The export button isn't disabled when no contact is selected (r=jmcanterafonseca).(cherry picked from commit c538b69f6ec93072721c5aa7d581d3cac254d435)

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https://hg.mozilla.org/integration/gaia-1_2/rev/61caabdbb087
Author: steveck-chung <schung@mozilla.com>
Desc: Merge pull request #12177 from steveck-chung/issue913378

Bug 913378 - Redesign of incoming call screen - Gaia implementation. r=etienne a=koi+(cherry picked from commit 5d5089dfc6457e74800e0cc56b2998567908fd55)

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https://hg.mozilla.org/integration/gaia-1_2/rev/8aef08e59dcb
Author: Gareth Aye <gaye@mozilla.com>
Desc: Merge pull request #12076 from gaye/bug-821519-again

Bug 821519 - Enable sharing urls from the browser through email r=jrburke(cherry picked from commit c6b4cc05b2de6884a652c1c5ab8401216ffa46c1)
Bug 903866 - Ensure the appbar and url input field start life as visible. r=mbrubeck a=bajaj