Changed the layouts for weather data display in the forecast list.
Created custom adapter and used it in ForecastFragment.
Changed ForecastAdapter to use two types of layouts.
Used View Holder Pattern to improve speed (that will mostly be noticeable if the app  will scale to hundreds of items).
Formatted the displayed temperatures to show symbol for degrees.
Changed the way weather data is displayed in DetailsActivity.
Added more icons and changed the main app icon.
Updated the app to use the new icons based on the weather info.