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

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https://hg.mozilla.org/integration/gaia-2_1/rev/32dddd6a0473
Author: albertopq <apastor@mozilla.com>
Desc: Bug 1056969 - New data/roaming alignment

Conflicts:
	apps/system/js/statusbar.js

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https://hg.mozilla.org/integration/gaia-2_1/rev/30ce14e502b7
Author: Julien Wajsberg <felash@gmail.com>
Desc: Bug 1052447 - [Messages] when we're in an activity and we delete all messages in the thread, we should close the activity r=azasypkin

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https://hg.mozilla.org/integration/gaia-2_1/rev/4ab173d1202f
Author: Andrew Sutherland <asutherland@asutherland.org>
Desc: Bug 1058900 - [email] Workaround graphics corruption / memory spikes by cleaning up HTML display logic. r=jrburke
Bumping manifests a=b2g-bump