Bumping gaia.json for 3 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-1_4/rev/a2eb54a9b05c
Author: Ryan VanderMeulen <rvandermeulen@mozilla.com>
Desc: Bug 998118 - Dont display crashed background tabs. r=benfrancis, a=lmandel

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https://hg.mozilla.org/integration/gaia-1_4/rev/634c3fcc4c21
Author: Ryan VanderMeulen <rvandermeulen@mozilla.com>
Desc: Merge pull request #21220 from steveck-chung/bug-1022644-for-v1.4

Bug 1022644 - [Messages] Can't open the recipient panel if there are only 2 lines of recipients. r=azasypkin

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https://hg.mozilla.org/integration/gaia-1_4/rev/48acdf1d7eed
Author: steveck-chung <schung@mozilla.com>
Desc: Merge pull request #21173 from steveck-chung/bug-1022644-for-v1.3t

Bug 1022644 - [Messages] Can't open the recipient panel if there are only 2 lines of recipients. r=azasypkin(cherry picked from commit 366bf651ac320c8ccc458f08ece01f2b8aadfa1c)

Conflicts:

	apps/sms/test/unit/recipients_test.js
Bumping manifests a=b2g-bump