Bumping gaia.json for 9 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-2_1/rev/4673ede51d42
Author: James Lal <james@lightsofapollo.com>
Desc: Bug 1011016 - marketplace dev

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https://hg.mozilla.org/integration/gaia-2_1/rev/24185d128f50
Author: Dale Harvey <dale@arandomurl.com>
Desc: Bug 1071057 - Load sim variant top site customisations. r=kgrandon

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https://hg.mozilla.org/integration/gaia-2_1/rev/8f06050482a3
Author: albertopq <apastor@mozilla.com>
Desc: Bug 1075105 - Not showing ambient indicator in LockScreen

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https://hg.mozilla.org/integration/gaia-2_1/rev/c24e758fa047
Author: albertopq <apastor@mozilla.com>
Desc: Bug 1072728 -  Truncated STK with soft-button r=frsela

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https://hg.mozilla.org/integration/gaia-2_1/rev/4ac102adf525
Author: Alive Kuo <alegnadise@gmail.com>
Desc: Bug 1055299: Ignore continuous app launch request in homescreen side and send homescreen to background while rocketbar is open in system side

Conflicts:
	shared/elements/gaia_grid/js/grid_view.js

Conflicts:
	shared/elements/gaia_grid/js/grid_view.js

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https://hg.mozilla.org/integration/gaia-2_1/rev/d4592266f7ab
Author: Ryan VanderMeulen <ryanvm@gmail.com>
Desc: Merge pull request #24757 from jmcanterafonseca/fix_patch_same_ice_21

Bug 1061411 - [Contacts] ICE 1 & ICE 2 can be set to the same contact

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https://hg.mozilla.org/integration/gaia-2_1/rev/3dfab0108c85
Author: Jose M. Cantera <jmcanterafonseca@gmail.com>
Desc: Bug 1061411 - [Contacts] ICE 1 & ICE 2 can be set to the same contact

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https://hg.mozilla.org/integration/gaia-2_1/rev/1900c9e78418
Author: Ryan VanderMeulen <ryanvm@gmail.com>
Desc: Merge pull request #24831 from wilsonpage/1064903-v2.1

Bug 1064903 - Update to latest gaia-icons

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https://hg.mozilla.org/integration/gaia-2_1/rev/eb6b4cc07137
Author: Wilson Page <wilsonpage@me.com>
Desc: Bug 1064903 - Update to latest gaia-icons
Bumping manifests a=b2g-bump