Added unit tests for 3 new methods in base i18n API
Added unit tests for 3 new methods in base i18n API

The methods are intended for comparison of language codes:
  - languageCompare(), for use in array.sort()
  - equals()
  - contains()

eric-brechemier/lb_js_scalableApp,eric-brechemier/lb_js_scalableApp,eric-brechemier/lb_js_scalableApp