Model + migration for BudgetExpense

- brought in from feature/budget branch
API endpoint + test for deleting a CheckListItem instance

addresses #32
UI for deleting a CheckListItem instance

addresses #32
Merge pull request #35 from brab/issues/32/delete-check-list-items

Delete Check List Items
Build
Build

- fix broken scripts/ URIs from previous build
Build

- URIs should be prefixed with static/ not scripts/
Merge branch 'master' into feature/budget