Fix for #188 issue set default language for Block from Grant

[iandrosov]

Critical Changes

Update GGW_ApplicationCtrl & Test method addTextBlockToLibrary to set default Block language from Grant app

Changes

Issues Closed

[salesforce-cla]

Thanks for the contribution! Unfortunately we can't verify the commit author(s): Igor Androsov <i***@i***.i***.s***.com>. One possible solution is to add that email to your GitHub account. Alternatively you can change your commits to another email and force push the change. After getting your commits associated with your GitHub account, sign the Salesforce Inc. Contributor License Agreement and this Pull Request will be revalidated.