Bumping gaia.json for 1 gaia-1_2 revision(s) a=gaia-bump
Truncated some number of revisions since the previous bump.

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https://hg.mozilla.org/integration/gaia-1_2/rev/5179d960b469
Author: Julien Wajsberg <felash@gmail.com>
Desc: Bug 943183 - [Messages] the bad recipient markers should not be absolutely positioned to a non-scrolled ancestor r=schung

* Add "position: relative" for the absolutely positioned marker's nearest
  ancestor.