Bumping gaia.json for 6 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/241180951e5b
Author: David Flanagan <dflanagan@mozilla.com>
Desc: Merge pull request #20321 from davidflanagan/bug996398

Bug 996398: use fastSeek() in the Video app

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https://hg.mozilla.org/integration/gaia-central/rev/ee93c188d179
Author: Russ Nicoletti <rnicoletti@mozilla.com>
Desc: Bug 996398 - Use fastSeek API in Gaia video app

some refinements to the original patch

address review comment

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https://hg.mozilla.org/integration/gaia-central/rev/2b8b937b5eb0
Author: James Lal <james@lightsofapollo.com>
Desc: Merge pull request #20327 from lightsofapollo/1022488

Bug 1022488 - Show search grid on submit

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https://hg.mozilla.org/integration/gaia-central/rev/88f3f19f189a
Author: James Lal <james@lightsofapollo.com>
Desc: Bug 1022488 - Show search grid on submit

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https://hg.mozilla.org/integration/gaia-central/rev/57e1f8e0291a
Author: James Lal <james@lightsofapollo.com>
Desc: Merge pull request #20199 from lightsofapollo/icon-fallbacks

Bug 1022247 - Icon fetching refactoring

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https://hg.mozilla.org/integration/gaia-central/rev/219656e962ed
Author: James Lal <james@lightsofapollo.com>
Desc: Bug 1022098 - Icon display refactoring

  - Only cache icon results on the homescreen and not for the app:// protocol
  - Move default icon into the gaia_grid webcomponent
  - Ensure default icon is displayed for all users of the webcomponent
Bumping manifests a=b2g-bump