Remove question 6 and the route, 'none of the above', to get to it

This fork of the decision tree confused users so it's now being removed.
Hook in Q7 (how do you want SMP) to flow

Currently commenting out a lot of the variable assertions as the flow
hasn't yet reached the outcome with the addition of this new question.
Asks for the next employee pay date if usual paydates chosen
Given different pay frequencies, ask for the next employee pay date
Ask for employee pay day if frequency every 4 weeks
Ask for next pay date if pay frequency if irregular
After providing the next pay date, show the calculator result
Outputs a calendar on the maternity/paternity result page
Improve hint text
Remove extra comment that doesn't provide any useful info
Weekly calculations go straight to the SMP result
Ask when in the month an employee is paid
Calculate SMP when month frequency known
Ask for the specific day of the month
Ask what days the employee works
Ask what day of the month the employee is paid
After providing the working day, provide the SMP result
Make the multiple_choice question do something useful

It didn't have any real options, or tests for the option logic before.
It does now!
Save named inputs for questions with similar answer sets

These questions have similar options or values provided. Distinguish
them during calculation by giving them names.
Provide friendlier text for options