Bumping gaia.json for 6 gaia-central revision(s)

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https://hg.mozilla.org/integration/gaia-central/rev/58c319406b1c
Author: Salvador de la Puente González <salva@unoyunodiez.com>
Desc: Merge pull request #12163 from jmcanterafonseca/bug_details_matching

Bug 902399 In the Contacts duplicates screen allow to show a summary of ...
r=salva

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https://hg.mozilla.org/integration/gaia-central/rev/bcba90b62aa8
Author: Jose M. Cantera <jmcanterafonseca@gmail.com>
Desc: Bug 902399 In the Contacts duplicates screen allow to show a summary of the matching contacts info

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https://hg.mozilla.org/integration/gaia-central/rev/96ca29ce1a1b
Author: Albert <acperez@tid.es>
Desc: Merge pull request #12178 from acperez/bug-915703

Bug 915703 - Change format of MCC/MNC custom json in Gaia build scripts. r=yurenju

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https://hg.mozilla.org/integration/gaia-central/rev/52cd2551c048
Author: Albert <acperez@tid.es>
Desc: Bug 915703 - Change format of MCC/MNC custom json in Gaia build scripts. r=yurenju

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https://hg.mozilla.org/integration/gaia-central/rev/178962d71f41
Author: Albert <acperez@tid.es>
Desc: Merge pull request #12194 from acperez/bug-915780

Bug 915780 - Replace profile_dir by profile-dir. r=yurenju

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https://hg.mozilla.org/integration/gaia-central/rev/d290b74ede97
Author: Albert <acperez@tid.es>
Desc: Bug 915780 - Replace profile_dir by profile-dir. r=yurenju