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

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https://hg.mozilla.org/integration/gaia-1_4/rev/33cf3325b740
Author: Zac <zcampbell@mozilla.com>
Desc: Bug 999506 - Detect the device_root before pushing/clearing files from the device, remove hardcoded references to /sdcard

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https://hg.mozilla.org/integration/gaia-1_4/rev/afb36e0c30ee
Author: Fernando Rodriguez Sela <frsela@tid.es>
Desc: Bug 1004298 - STK PLAY_TONE fails when text is added to the proactive command, r=vingtetun

This reverts commit 34ef20e6ed6e3a8f4576e84e9ca394b18ed324ef.
Bumping manifests a=b2g-bump