updated school data fixture to include total boys and girls
updated unittest to fix failing tests and wrote new tests for total boys and girls state
Wrote the code for the total boys and girls state
added error state code to total boys and girls
updated inputs to include the reg_school_boys/girls values
changing to regex format
changed next_state to account for state flow
updated failing test to account for change
Merge pull request #87 from praekelt/feature/issue-87-add-question-asking-about-total-boys-and-girls-to-ussd-registration

add question asking about total boys and girls to ussd registration