basic cost map structure; will probably be modified a lot


Former-commit-id: b59b83a3099d00c2d2c30e8ac7e33ed3dc684932
refactored form layouts, learning about yield in rails layouts in the process; added a multi form page for step 4


Former-commit-id: 39ed2136ed75f9997b3c8b5577593489538e30c8
removed large file


Former-commit-id: 8f85b3b38611dce4f71178443bffeeadbbbb9dd5