Localization for Admin Module

[renato04]

address #[281]

This is the localization for the Admin Module.

[jkleinsc]

Thanks for the PR @renato04. I'll merge and resolve the conflicts.

[cfleschhut]

@renato04 Quick notice: With ember-i18n we can interpolate values in translation strings (and move the question mark into the string) like this:

// app/locales/en/translations.js
are_you_sure_delete: 'Are you sure you wish to delete the user {{user}}?'

// app/users/delete/template.hbs
{{t 'messages.are_you_sure_delete' user=model.name}}

(I used this technique here cfleschhut@0c6dbb9) :)

[renato04]

@cfleschhut Thank you for the suggestion i didn't know that, i'll try to use this technique next time.