Add validation for tax year and start dates
Merge branch 'master' into child_benefit_tax_calculator_amends
Merge branch 'master' into child_benefit_tax_calculator_amends
Add ability to add children while retaining existing dates
Remove redundant partial
Merge branch 'master' into child_benefit_tax_calculator_amends
Merge pull request #22 from alphagov/child_benefit_tax_calculator_amends

Child benefit tax calculator amends
Expose copy where income is below threshold
Remove test

Adjusted net income will be calculated with 11 inputs, yet to be
confirmed, so this test is irrelevant.
Don't calculate adjusted net income

We don't have confirmation of what inputs are needed to calculate
adjusted net income, removing the calculation for now.
Merge remote-tracking branch 'origin/fix_adjusted_income_input'
Merging master
update button for adding children, javascript functionality and updated styling