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

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https://hg.mozilla.org/integration/gaia-1_4/rev/da4ce8b2dc52
Author: Marcus Cavanaugh <m@mcav.com>
Desc: Merge pull request #17344 from mcav/apop

Bug 983167 - [email/POP3] broken node-crypto.js shim causes auth failure...

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https://hg.mozilla.org/integration/gaia-1_4/rev/77c0ea2d2ce4
Author: Ian Liu <iliu@mozilla.com>
Desc: Merge pull request #17175 from ian-liu/bluetooth/bug981626_support_sharing_picture_and_video_simultaneously

Bug 981626 - [Sora][gallery]Can't be shared when select picture and video simultaneously, r=@dominickuo
Bumping manifests a=b2g-bump