Ability to modify ionic configuration through config.json

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http://ionicframework.com/docs/api/provider/$ionicConfigProvider/

1. Create a new key in config.json named "ionicConfig"
2. Basically in index.coffee we need to map all config function that $ionicConfigProvider provides:

app.config ($WPHCConfig, $ionicConfigProvider) ->
    $ionicConfigProvider.views.maxCache _.get($WPHCConfig, 'ionicConfig.cache.views') || 10
    $ionicConfigProvider.views.forwardCache _.get($WPHCConfig, 'ionicConfig.cache.forward') || false
    $ionicConfigProvider.scrolling.jsScrolling _.get($WPHCConfig, 'ionicConfig.scrolling.jsScrolling') || false
    // MORE HERE

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• translate back button

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Done except translation the back button. Creating another issue just for it