appln learnings

 Invoke REST api

• Define data structure in Model js
• Define callback function in model js that copies the data to JS data structure.
• call DataProvider function to get the data
  
• DataProvider.js invokes REST api and calls the call back function on success
  
• Refer the Model datastructure in UI

 Translations

• In js/resources/nls/root 
• define the languages that are supported
• Create js files with message name & value pair 
  
• Refer the message in resource directory in model js
        self.warningText = ko.observable(oj.Translations.getTranslatedString('oj-message.warning'));
  
• Use the model observable variable in the html files