Integrate Google Translation API into Language Translation

Google has very nice Google Translation API that we can utilize to translate In-Portal into multiple languages.

The following features will be implemented in this feature:

1. Ability to mass translate Phrases and Email Events when Language Pack is created from another one (all phrases + events are copied). The proper Locale must be selected for both (source and target) language packs.

2. Ability to get Translation (as suggestion) of any label when editing it via Admin->Labels & Phrases section. The purpose of this is to be able to translate Labels individually.

We are using Google Translate API version 2 - http://code.google.com/apis/language/translate/v2/getting_started.html

Also, both API related Configuration Settings (Google Translate API Url and Google Translate API Key) are put under Admin->Configuration->Advanced->3rd Party API Settings section (new)