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

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https://hg.mozilla.org/integration/gaia-central/rev/124a4b38bb9f
Author: Germán Toro del Valle <gtorodelvalle@gmail.com>
Desc: Merge pull request #10456 from gtorodelvalle/dialer-bug-883756-contact-details-from-call-log

Bug 883756 - [Call log] Tapping on an entry from a contact does not take to that contact's detail view screen but to a different one (r=arcturus)

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https://hg.mozilla.org/integration/gaia-central/rev/b6fd2ae4b6a7
Author: Germán Toro del Valle <gtorodelvalle@gmail.com>
Desc: Bug 883756 - [Call log] Tapping on an entry from a contact does not take to that contact's detail view screen but to a different one.

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https://hg.mozilla.org/integration/gaia-central/rev/3cd291d23155
Author: Alive.Kuo <alegnadise@gmail.com>
Desc: Merge pull request #10888 from alivedise/bugzilla/891799/type-error-resize

Bug 891799 - Fix TypeError: runningApps[displayedApp] is undefined, r=timdream

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https://hg.mozilla.org/integration/gaia-central/rev/550ed8c0c3f2
Author: Alive Kuo <alegnadise@gmail.com>
Desc: Bug 891799 - Fix TypeError: runningApps[displayedApp] is undefined