implement VitalSign class
Refactor: rename layouts
Refactor: CardListFragment to using static factory
add reusable tab indicator fragment.
add contact screen.
update blankFragment to be able to set BG color.
add tabs indicator fragment
Refactor
add cards for contact screen
Update contact screen to use card and tab.
change editTextPage's field to required by default
implement doctor's tab in contact screen.
implement emergency's tab in contact screen.
center the photo icon on contact screen and fix tab title label.
add icons to contact card expand
add icons to doctor card expand.