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

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https://hg.mozilla.org/integration/gaia-1_3/rev/e046b6963648
Author: Ryan VanderMeulen <ryanvm@gmail.com>
Desc: Revert bug 991657 for Gaia UI test failures on TBPL.

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https://hg.mozilla.org/integration/gaia-1_3/rev/e4be17c26737
Author: Ryan VanderMeulen <ryanvm@gmail.com>
Desc: Revert "Bug 991657 - [v1.3] Backport test_cards_view_with_two_apps.py test to v1.3"

This reverts commit 14fcc0e81d2c92a2aec3a50b596be4ee615de759.
Bumping manifests a=b2g-bump