- Use `TokenAuthenticatable` to generate the personal access token
- Remove a check for `authenticity_token` in application controller;
this should've been `authentication_token`, maybe, and doesn't make
any sense now.
- Have the datepicker appear inline
- Rename the `authenticate_user_from_token!` filter to
`authenticate_user_from_private_token!`
- Add a new `authenticate_user_from_personal_access_token!` filter
- Add tests for both.
Timothy Andrew