Duplicated Married Couples Allowance flow
Mark v2 flow as draft
Remove unnecessary whitespace
Add adjusted net income calculation to calculator
Add adjusted net income questions to the flow, for use case where married before 2005
Add integration tests for married before 2005, but not paying into pension
Add adjusted net income for marriages post 2005.
Copy changes
Validate income inside the flow, not the calculator

This buys us two things:-
- It's easier to test the validation in the smart 
answer.
- If you happen to have greater pension contributions
and gift aided donations than your income, you will
have an adjusted net income of < 1, so you should
get the maximum amount. 

The existing validation is still in the calculator
to maintain backwards compatibility with V1, but
it is bypassed by a key in the hash parameter to
the initialize method.
Revert whitespace changes to v1 flow locale file
Initialize the calculator with the correct key
Add trailing whitespace to markdown for line breaks
Merge pull request #135 from alphagov/married-couples-allowance-amends

Married couples allowance amends