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

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https://hg.mozilla.org/integration/gaia-central/rev/90e5fc245472
Author: Dale  Harvey <dale@arandomurl.com>
Desc: Merge pull request #11047 from timdream/browser-about

Bug 894978 - Correct background image dimensions in browser about page. r=daleharvey

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https://hg.mozilla.org/integration/gaia-central/rev/1c03bd97f358
Author: Timothy Guan-tin Chien <timdream@gmail.com>
Desc: Bug 894978 - Correct background image dimensions in browser about page

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https://hg.mozilla.org/integration/gaia-central/rev/5526d8d0d259
Author: Jose M. Cantera <jmcanterafonseca@gmail.com>
Desc: Merge pull request #11141 from jmcanterafonseca/contacts_match_fix2

Bug 897390 Contacts Matcher (active mode) matches incorrectly contacts w...

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https://hg.mozilla.org/integration/gaia-central/rev/44df443bc79b
Author: Jose M. Cantera <jmcanterafonseca@gmail.com>
Desc: Bug 897390 Contacts Matcher (active mode) matches incorrectly contacts which do not define familyName