Bumping gaia.json for 4 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/80316a378071
Author: James Lal <james@lightsofapollo.com>
Desc: Merge pull request #29238 from lightsofapollo/backout-l10n-improvements

Backout l10n improvements

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https://hg.mozilla.org/integration/gaia-central/rev/f5cbd61e7eaa
Author: James Lal <james@lightsofapollo.com>
Desc: Revert "Bug 1149319 - Define settings-link in HTML instead of in the translation"

This reverts commit 498458c95ea417ed0ac0629c67bae2dc9515ecda.

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https://hg.mozilla.org/integration/gaia-central/rev/8b3a7fd37b4f
Author: James Lal <james@lightsofapollo.com>
Desc: Revert "Bug 994357 - Use DOM overlays for safely setting node content. r=gandalf"

This reverts commit 7716352332da24d8af54c36993e569582d908f9b.

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https://hg.mozilla.org/integration/gaia-central/rev/ecba0ec69b55
Author: James Lal <james@lightsofapollo.com>
Desc: Revert "Bug 1142526 - Treat the innerHTML attribute as the string's value. r=gandalf"

This reverts commit 2dd503651c08166bc0a6b5b917ff0571fde87ae6.

b2g/config/gaia.json

@@ -1,9 +1,9 @@
 {
     "git": {
-        "git_revision": "ee1fba22db03606b8c01fdf947e3746a25a2da46", 
+        "git_revision": "bcedf4da50e0d14db881dd53cf158b2a4626dbd2", 
         "remote": "https://git.mozilla.org/releases/gaia.git", 
         "branch": ""
     }, 
-    "revision": "d574d44a2fe292392669f3a6021e6900a4d1b2e3", 
+    "revision": "80316a378071b1ab2b7c18f70e3f71f09dc7af0d", 
     "repo_path": "integration/gaia-central"
 }