Debt Free Day Integration: Make sure the engine inherits the correct controller / layout
Debt Free Day Integration: add a feature to test integration
Debt Free Day Integration: WIP support route for the loan calculator
Debt Free Day Integration: add cassettes for debt and borrowing categories
Debt Free Day Integration: Change locale key to match locale structure in engine.
Debt Free Day Integration: Revert override of ToolMountPoint method pending integration of two calculators.