Update "Badge" style

[bensperry]

Discussion started here: http://forum.ionicframework.com/t/too-much-space-between-badge-and-icon-on-ion-tab/1401/3

It might be best to move away from percentage based layout for Badges, especially when we start thinking about wider screens for iPads and other tablets.

[hcentelles]

I made a screenshot with several icons of different length as andy​tjoslin suggest me on the forum. I take the shots from a iphone 5 on ios simulator.

[ionitron-bot]

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