Work Done:
- refactored code in FavouritesScreenController and
ExampleShoppingListController
- added 'qty' column to ExampleShoppingList
- changed order of navigation buttons
- changed company logo to act as button back to start screen
- comments
- various changes to stylesheet

Problems faced/Work to be done:
- style search bar
- style empty table rows
- find out how to align table cell contents in css
- refactor stylesheet
- remove ununsed code
- add tooltip to company logo button