Bumping gaia.json for 5 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/c94db58395fc
Author: Timothy Guan-tin Chien <timdream@gmail.com>
Desc: Merge pull request #22970 from timdream/keyboard-inputcontext-events

Bug 972210 - Have Pinyin and Zhuyin responsive to selectionchange, r=rudyl

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https://hg.mozilla.org/integration/gaia-central/rev/e854ae6e0d5a
Author: Timothy Guan-tin Chien <timdream@gmail.com>
Desc: Bug 972210 - (Part IV) Move Latin script tests to it's right place

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https://hg.mozilla.org/integration/gaia-central/rev/e6c42df72067
Author: Timothy Guan-tin Chien <timdream@gmail.com>
Desc: Bug 972210 - (Part III) Move JSPinyin unit test to it's right place

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https://hg.mozilla.org/integration/gaia-central/rev/617fc9550f3d
Author: Timothy Guan-tin Chien <timdream@gmail.com>
Desc: Bug 972210 - (Part II) Have Pinyin and Zhuyin responsive to selectionchange

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https://hg.mozilla.org/integration/gaia-central/rev/1e398a899126
Author: Timothy Guan-tin Chien <timdream@gmail.com>
Desc: Bug 972210 - (Part I) Stop exposing inputContext to IMEs
Bumping manifests a=b2g-bump