Prototype completed. It works, but only under perfect conditions.
. Restructured the application so it makes more sense.
  - Use singleton objects instead of application context variables so
    different data (e.g. user, department, news etc.) are managed
    separately.
  - Separate data models and singleton data "holders".
  - Separate some functions from WebServiceClient into JsonUtils.
  - Create a new utility class WidgetUtils.
. Implemented user login.
  - Set request parameters for HttpUrlConnection.
. Implemented News.
  - Use ADT's Master/Detail Flow template.
  - Use WebView for news display.