add first_claimant attribute to Claimant model
rename cc to claimants in spec; fix spec
refactoring spec
use claimant_num to implement first_claimant?() method
refactoring spec
refactoring
refactoring spec
remove unused num_claimants field
refactoring spec - removed repeated specs
refactoring context definition
removed repeated validation specs
validate address same as first claimant is specified if claimant is not first claimant
temporarily set address_same_as_first_claimant before rebase
fix var name
merge with master
fix specs
better validation error messages
refactoring
merge with master
fix spec expectations