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

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https://hg.mozilla.org/integration/gaia-central/rev/1e4a8dbd33aa
Author: vingtetun <21@vingtetun.org>
Desc: Merge pull request #21116 from vingtetun/bug1031331

Bug 1031331 - [homescreen] Do not show the contextmenu while in edit mod...

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https://hg.mozilla.org/integration/gaia-central/rev/208ea4822f12
Author: Vivien Nicolas <vnicolas@mozilla.com>
Desc: Bug 1031331 - [homescreen] Do not show the contextmenu while in edit mode. r=crdlc
Bumping manifests a=b2g-bump