Seema & Sam: Fixed the free text benefit entry. Still need to fix
the validation for and/or custom benefit and default benefit list.
Seema & Sam: Improve validations for benefits. Ensure freetext benefits
work.
Merge branch 'master' of github.com:InsolvencyService/wader into benefit-freetext-field
Seema & Sam: Fix flake8 unused variable error.
Merge pull request #148 from InsolvencyService/benefit-freetext-field

Seema & Sam: Fixed the free text benefit entry. Still need to fix