Bumping gaia.json for 2 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/3376c0645ebd
Author: Anthony Ricaud <anthony@ricaud.me>
Desc: Merge pull request #16370 from Rik/dsds-notification-965853

Bug 965853 - Display SIM indication in missed call notification r=etienne

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https://hg.mozilla.org/integration/gaia-central/rev/9212080ca7cd
Author: Anthony Ricaud <anthony@ricaud.me>
Desc: Bug 965853 - Display SIM indication in missed call notification

Refactored mock_call to handle several handlers for one event type
Moved a few files to jshint linting
Bumping manifests a=b2g-bump