release_2983

All PRs included

PR #2181 Remove multiple question per page code
PR #2180 Remove unused SmartAnswerPresenter#page_title method
PR #2161 Add living wage to wage calculator
PR #2169 Update documentation
PR #2172 Memoize node presenters
PR #2179 Rename SmartAnswerPresenter to FlowPresenter
PR #2177 Update the accommodation rate for minimum wage

PRs to check post-deployment

PR #2161 Add living wage to wage calculator