Final Update

Large update, much time spent on the user experience. Main menu complete
with logo. Icons added for everything. Fixed rating bar under View
contact details, disabled touch settings rather than disabling bar as
this makes it dim. Code added to dismiss keyboard when user clicks away
from it. App now checks user has filled in all fields before write is
made to database, App also checks if a user already exists with the same
name to avoid duplicates. Call functionality added to View Contact
screen, user can call mobile or home by clicking button.