added IndexedPath model and spec
created IndexedPaths controllerr
created scaffold for indexed path
migrate db for new IndexedPath created with scaffolding, recreated IndexedPath spec
added test and method to set default last_index_dt on IndexedPath
removed last index dt field from IndexedPaths _form view. removed test for default date on last index dt
removed IndexedPaths scaffold
generated scaffold for vaults
removed arn field from vault form
added Vault#StartIndex method and route
added delayed_job