Ch 16 Add strings.
Add menu/fragment_crime_list.xml
In Preferences/Gradle enable offline mode so Gradle can build project while computer is offline.
In CrimeListFragment override onCreateOptionsMenu() and in onCreate call setHasOptionsMenu(true). Now app shows options menu.
In CrimeLab add method addCrime().
In CrimeLab delete method populateCrimes(). In CrimeLabTest delete related tests. Add testCrimeLabCrimesEmpty and testAddCrime.