Add method to calculate benefits claimed for year
Add a wider range of years to date select
Update start and end date ranges and rename partial
Move partials to calculator views directory
WIP to separate the total benefit claimed from tax liability.

First step to expose the total child benefit claimed for a tax year
and simplify the concept of how varying numbers of children affect
the tax liability.
Remove check for tax year.

The tax year is no longer required when accessing the calculator.
Add format method for tax years.
WIP re-order questions and output total benefit claimed
Add test for benefits received in a partial year
Add test for more than one child
Remove year from title
Merge pull request #15 from alphagov/calculate_total_claimed_benefit

Calculate total child benefit claimed