404-redirect for misspelled URLs and Indexed we haven't implemented

[ncbui]

We might not need to implement it at all.

PR #116 might take care of all the error redirections! 🥳

• Case 1: When users navigate to /organizations, the app blows up. Should redirect to 404-page

• Case 2: When users navigate to /shift, the app blows up. Should redirect to 404-page

• Case 3: When users navigate to '/workers, says missing template. Should redirect to 404-page

• Case 4: any misspelling URLs should redirect to 404-page

Found while working on issue #12, but is not blocked nor blocks that issue