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

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https://hg.mozilla.org/integration/gaia-central/rev/2083af4e16b7
Author: Evyatar Amitay <evyatron@gmail.com>
Desc: Merge pull request #12711 from EverythingMe/924106-evme-context-menu

[Bug 924106] Fix context menu opening on evme pages [r=crdlc]

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https://hg.mozilla.org/integration/gaia-central/rev/194e91e999d8
Author: Evyatar Amitay <evyatron@gmail.com>
Desc: [Bug 924106] Fix context menu opening on evme pages [r=crdlc]

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https://hg.mozilla.org/integration/gaia-central/rev/9be0ae255027
Author: Amir Nissim <amirnissim@gmail.com>
Desc: Merge pull request #12708 from EverythingMe/923721-staticapps-perf

Bug 923721 - [B2G][Everything.me] Low performance when a large collectio...

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https://hg.mozilla.org/integration/gaia-central/rev/f66000b1caae
Author: Amir Nissim <amirn@everything.me>
Desc: Bug 923721 - [B2G][Everything.me] Low performance when a large collection app list re-organizes after removing an app [r=ranbena,evyatron,crdlc]

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https://hg.mozilla.org/integration/gaia-central/rev/87bb9dd2ea0e
Author: Ran Ben Aharon <ran@everything.me>
Desc: Merge pull request #12705 from EverythingMe/bugfix-923408

Bug 923408 - [e.me][bug] Collection title style is wrong [r=crdlc]

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https://hg.mozilla.org/integration/gaia-central/rev/666ef29a8969
Author: Ran Ben Aharon <ran@ranbena.com>
Desc: Bug 923408 - [e.me][bug] Collection title style is wrong [r=crdlc]