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

========

https://hg.mozilla.org/integration/gaia-2_1/rev/d4f3494dc596
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Bug 1063789 - Do not save places for non-browser frames r=daleharvey

========

https://hg.mozilla.org/integration/gaia-2_1/rev/b6d4318afeb6
Author: Francisco Jordano <arcturus@ardeenelinfierno.com>
Desc: Bug 1061413 - [Contacts] Favorites on top of ICE if ICE set first, and Favorites set later

========

https://hg.mozilla.org/integration/gaia-2_1/rev/b07b358ef476
Author: TheoChevalier <theo.chevalier11@gmail.com>
Desc: Bug 1063216 - Fix plural form in Usage widget

========

https://hg.mozilla.org/integration/gaia-2_1/rev/7869e38fbcbb
Author: Kyle Machulis <kyle@nonpolynomial.com>
Desc: Bug 1061804 - Browser OpVar Customization Fixes

========

https://hg.mozilla.org/integration/gaia-2_1/rev/67c403704cf9
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Bug 1062119 - Do not animate gaia-progress by default r=gsvelto
Bumping manifests a=b2g-bump